Computers software word processors pdf converters

Banking: In banks the customers, present cheques for withdrawing money. The clerk verifies from the register the signature of the customer.

The customer has signed in the application form while opening an account. If the customer has sufficient balance to cover the cheque amount, the clerk passes the cheque for payment, and updates the balance. We will see how the above operation called personal banking is computerized. Suppose you want to open a bank account. The bank official hands over a form to you. You fill up the details such as name, address, profession etc. The bank stores this information in a computer on which a banking software runs.

If you present a cheque to the clerk in the bank, he can check the signature manually. If he is satisfied with the correctness, he can enter you account number and the cheque amount into the computer which checks your account and updates the amount.

The clerk then pays you the money. In the method, the payment is manual and accounting is automatic. There is another way where the checking of you accounts as well as payment is made by computer using an automatic teller machine. Let us study this. A machine similar to automatic coffee vending machine is installed at selected places. When you open an account, the bank gives you a special type of card.

Your name, account number and address are suitably recorded. Your signature is magnetically recorded in that card. All these details are suitably converted and recorded in the computer also. When you want to withdraw money, you go to the teller counter and press a few buttons. You then insert your card in the slot provided in the machine. The machine reads you account number and signature from the card.

It sends them to the computer which checks you account number and signature. If they tally, the computer sends a relevant message to the automatic teller machine. It asks you to enter the amount. You may enter the amount through the buttons on the machine. Again the computer checks if you have sufficient balance. If so, it instructs the machine to pay you. The ATM then delivers the cash on the tray fixed in it. You may collect the money. This is only one example of application of computer in banks.

Now large systems installed at the head office of a particular bank are connected to systems installed at its branches all over the country.

The computers of different banks are also connected together. By sending suitable messages money can be transferred from one bank to the other. This is called Electronics Funds Transfer. Railway Reservation System: Application of computers in railway reservation has made tremendous impact in India. Before computerizing, there were a number of counters, each counter serving a particular train or a few trains. If you want to make a reservation to, say Delhi, you have to go to the particular counter and join the queue.

The clerk had a register in which two or three pages are allotted to each date. He may have two or three more registers for other trains for which he is making reservation. He puts seat numbers on a page one by one and keeps writing the names of passengers for whom he reserves seats against seat numbers.

After some time, if somebody cancels his ticket, he strikes off the name. This gives rise to lot of confusions. In a number of situations, two persons used to be allotted the same seat. With the increasing population the Government is increasing the number of trains. Thus the volume of data to be handled has also increased enormously.

You can just imagine the confusion this will create if we are still following the manual system of reservation. We just saw how manual system has become unsuitable in the present context.

Now let us study how the computerized railway reservation system works. There is a central computer with a number of terminals connected to it the details of all trains for which reservation is done at the region are stored in the computer.

The railway reservation system runs on this computer. The terminals are situated in booking counters.

It is possible to install the terminals in a far off place and connect them to the computer through cables. When the passenger presents the reservation form to the booking clerk he enters the train number, date, name, age and other details of the passenger.

The program checks availability of seats in that particular train on that particular date. If accommodation is available, the clerk presses a button on the key board and the computer prints out the ticket on the printer connected to the terminal. It also updates the computer file to reflect the new reservation position. Suppose you wanted the ticket for train number 1, but you get only a waiting list. The clerk tells you your position in the waiting list.

If you want you can get a wait listed ticket. If not, you tell the clerk to check for accommodation in a different train to your destination. The clerk only has to re-enter the train number.

The computer checks availability, reserves you ticket on that train if a seat is available and prints the ticket. Thus you can go to any booking counter and request for reservation in any train being operated on that station. Also the errors found in the manual reservation method are eliminated. The reservation system is broader based as follows: Today computers in different cities are connected together. It is called networking. Suppose you are in Coimbatore. You want to book your journey from Madras to Coimbatore.

You can go to a booking counter Railways have opened a number of booking counters in the same city in Coimbatore and reserve your ticket from Madras to Coimbatore. Thus there is lot of flexibility in reservation. We studied that computers are capable of storing lot of data on the hard disk.

They are also capable of retrieving data fast. So the list of passengers for a particular day for a particular train is also printed out very fast. The reservation data for a number of trains over a period of time is available. By suitable software, the railway authorities can prepare the data regarding passengers traveling in different trains to different places during different periods.

This helps them plan for new trains, reschedule the running trains and make lot of analysis regarding passenger traffic. Air Lines Reservation System: We saw how computers handle the railway reservation and offer a number of advantages. They can be used also in Airlines reservation. Only difference will be that some booking counters in the reservation network may be situated in different countries.

This means that we have to connect computers across the countries. Such networks are operational now. In the coming years, computerized reservation systems will become very common. Even hotel accommodation reservation systems for major hotels are coming up.

If we integrate flight and hotel reservation, it is convenient for the passengers. Let us consider the example of a manufacturing process. A product C is made from raw materials A and B. The quality of C depends upon, among other things, the quality of A and B and their quantities. In big manufacturing processes, raw materials are fed by machineries. Due to problems i n machineries, the performances may vary from machine to machine.

This affects the quality of final product. Manual inspection of quality and operation of these machineries to control the quantity are slow. This slows the manufacture of C from raw materials A and B. Signals from C are fed to the computer. Suitable sensors are installed in the lines carrying raw materials as well as finished product. These generate signals.

The values of these signals for correct proportion of raw materials are stored in the computer. When the process is on signals keep coming from the output line depending up the quality of finished product. Let us see what happens if either A or B varies in quality. The quality of the finished product also suffers. The sensor in the finished product line senses this. The signals generated by it change in strength. They are sent to the computer. It compares the signals with already stored signals.

The difference is used to change the quantity of raw materials A and B. Manual control of this process is slow. Moreover, if people inspect quality and operate machineries feeding raw materials, they become tired after sometime. But computer does not. So the quality of product is uniform. Moreover, there may be processes where the presence of human beings continuously for hours together will be injurious to their health.

In such places computer control avoids such ill-effects. Computer is useful in business processes like payroll processing for generating statements useful for various departments like provident office, ESI etc. It is useful for inventory control activities such as maintaining optimum inventory level and re-order level. Online applications in banking and reservation have brought about advantages like saving of time and money.

Car manufacturing industries and other production functions use real time applications effectively. Explain in detail about the application of computers in business.

Explain in detail about on- line applications. Write short notes on Real- Time Applications. Sales order processing ii.

Inventory control iii. Payroll processing 4. Various job opportunities available in the computer field. Nature of job of a programmer, system analysts, web designer 3.

Information technology enabled services like BPO. It is creating the need for professional workers who can fulfill the high performance standards in the technology- based industries.

The IT professional plan, design, develops, support, and manage the strategies and adopt them to fulfill basic objectives of them firm. The rapidly changing technology requires the employees to have more skills and education.

The companies look out for IT professionals who not only have sound technical knowledge of the subject but also have sound interpersonal and communication skills.

Programmer: A programmer is a person who writes the code for a computer program. Computer programs are the instructions given to the computer, telling the computer what to do, which information to identify, access and process.

They are involved in coding of a project and the successful implementation of the developed system. There are tow types of programmers — application programmers and system programmers. The application programmers code programs for a specific task application in the organization. On the other hand, the systems programmers code programs for controlling and maintaining the computer system software.

System analyst: A systems analyst plans, designs, develops, and implements new systems or applies the existing system resources to perform additional operations. Most of the systems analysts work with specific type of system like business, accounting, finance, science or engineering and so on. Some systems analysts are also known as system developers or system architects. A system analyst determines the problem in the system by discussing it with the managers and users before starting an assignment.

They study the information needs of the organization to determine the changes that are required to deliver a solution to the problems of users. Next, the systems analyst determines the hardware and software needed to set up the system. Systems analysts prepare the specifications, flowcharts, and process diagrams for the computer programmers to follow, and then work with the programmers to debut, and to rectify and errors in the system.

They also check the initial use of the system and organize tests to check the working of the system to ensure that it works as required of planned. Systems analysts who perform more intricate testing of products are referred to as software equality assurance analysts. They not only perform tests but also diagnose the problems, suggest solutions and checks whether the program requirements have been met or not.

The analysts, who design, test and evaluate the Internet, Intranet, local area network LAN , wide area network WAN and other data communications system are called network and data communications analysts. Network administrator A network administrator is a person who installs, configures, and supports the local area network, wide area network, the Internet system or the segment of a network system in an organization.

Every network in an organization requires at least one network administrator. Network administrators perform the functions such as installation, configuration, maintenance of computers, and networking of equipment.

They also check and ensure the availability of network to all the users. They supervise the support of other networks and plan, coordinate and implement network security measures. Database administrator A database administrator DBA is an individual who is responsible for the storage of data, management of the database, and implementation of the database management system.

They work with database management systems software and determine ways to organize and store data. They identify user requirements, set up the computer databases, and test and organize the modifications to the systems.

DBA is responsible for maintaining data integrity, back up systems and database security. With the rapid growth of the Internet, many jobs relating to design, development, and maintenance of the web sites and servers have cropped up in the market.

The web designer controls all aspects of design and programming of elements of text and visual design. They are responsible for maintaining all technical aspects of a web site, including its performance issues such as speed of access and approving the content of the web site. Web designers create the artistic feel of the web site, facilitate navigation, and make content on the web site accessible to the users.

Information security analyst An information security analyst is an individual who performs highly complex analysis and technical tasks involving assignment and co-ordination of measures to provide information assurance, event detection, and rapid response across various environments of the enterprise. Information security analysts design, implement and support integration of information security solutions including security architectures, firewall administration, integrating security products, and developing and coordinating security implementation plans.

They provide technical support on security projects that involve a wide range of issues including secure electronic data traffic, network security, platform and data security and privacy. They review and contribute to the security activities of business application and development project plans across all business units. Business process outsourcing Business Processing Outsourcing BPO refers to a decision to assign to another party some or all non-core processes. The main motive of BPO is to allow the company to invest more time, money, and human resources into core activities and building strategies, which helps in company growth.

The BPO jobs include various sectors like finance, accounts, customer support, IT services, medicines, among other. Today, the global market is highly competitive and ever changing.

A company must focus on improving productivity and even cut down costs. There fore, many tasks that use precious time, resources and energy, are being outsourced. BPOs, or the units to which work is being outsourced are flexible, quicker, and cheaper and very efficient in performance of the work. Check Your Progress 8 Who is a programmer? Notes: a Write your answer in the space given below b Check your answer with the one given at the end of this unit pp.

The vast spread of IT has generated versatile jobs such as programmer, Systems Analysts, network Administrator, Web designer, information security analyst, and many more. There are two types of programmers-application programmers and system programmer. Suresh K. Differences between analog and digital computers. Basic principles of operation of a digital computer. These technologies allow people to transmit information quickly and widely, linking distance places and to create communities that just a decade ago were unimaginable.

It is difficult to appreciate just how quickly information technology is evolving. Five decades ago ENIAC, one of the earliest computers stood ten feet tall and stretched eighty feed wide; while today, one can buy a musical greeting card with a silicon chip that is times faster than ENIAC. This extraordinary phase of information technology is bringing people and cultures together and creating new social dynamics in the process.

It is leading to the formation of closely bonded and widely dispersed community of people united by their interest in doing business or in sharing experiences and intellectual pursuits. New forms of knowledge accumulation are developing, as are computer based learning system that opened the way to innovate modes of instruction and learning. As an aid in problem solving, it accepts data, both numeric and non numeric, processes and presents it in the desired form.

The following are the various types of computer systems: 6. Analog Computers Analog is the Greek word, which means similar. So, in analog computers, the similarities between any two quantities are measure by electrical voltages or current. The analog computers operate by measuring instead of counting. The analog computer works on the supply of continuous electrical signals.

The display is also continuous. Its output is in the form of graphs. Analog Signal: An analog signal is a continuous variable electromagnetic wave. It can consume an infinite number of voltage or current values. Characteristics of analog computer The analog computer has the following important characteristics: a It operates by measuring.

Digital Computers These computers work with quantities represented as digits. They operate on discrete quantities. In digital computer, both numeric and non- numeric information are represented as strings of digits.

The information is given to the computer in the form of discrete electrical signals. The basic operation performed by a digital computer is addition. Characteristics of digital computer The digital computer has the following characteristics: a It operates by counting. No Analog computer Digital computer 1 It operates by measuring It operates by counting 2 It requires physical analog It functions on discrete numbers 3 The calculations are first converted The calculations are converted to equations and later converted into into binary numbers 1s and 0s electrical signals 4 The output is in the form of graph The output is in the form of discrete values 5 Less accurate More accurate 6 Less speed High speed 7 Limited memory is available More memory is available 8 Lacks flexibility Highly flexible 9 Cannot process alpha-numeric Can process alpha number information information 10 Limited application More number of applications 11 Not suitable for business Highly suitable for business applications applications 3.

Hybrid computers: The computer which possess the features of both analog and digital computers are called hybrid computers. That is, the hybrid computers have the good qualities of both analog and digital computer. With the hybrid computer the user can process both continuous and discrete data.

This computer accepts either digital or analog or both types of input and gives the results as per requirements through special devices. In the hybrid computers a converter is fixed to convert the analog data into digital data and vice versa.

These are special purpose devices and are not widely used. General Purpose Computer These are designed and constructed to cater almost all the needs of the society. They can perform various operations. In fields of engineering, science, commerce and industry.

They are able to perform according to the programs created to meet different needs. The general — purpose computer can be used to prepare stores reports, sales reports, payroll, etc. Special Purpose Computers These computers are designed to solve a particular problem or task, the computers are provided with limited memory and speed necessary for a particular job.

The instructions needed to perform the particular task are incorporated into the internal memory of the computer. It does not posses unnecessary options, hence it is economical.

Business purpose computers and scientific purpose computers. Micro Computers Because of its small size and the use of micro-processor, this computer is called micro computer. All the computers have three units namely input, output and central processing unit, CPU. The entire CPU is contained in a single or a few microchips. Its storage capacity is low when compared to mini and main frame computers. It is able to accept most of the high level languages. However, it uses an interpreter or complier for running high level languages.

Microchips contain micro electronic circuitries which are very tiny. Large numbers of these can be packed tightly on to a single tiny piece of silicon. Silicon is a material found in sand. The microchip is made by building up a series of very thin layers of silicon and of the tiny components which are held in it. They are relatively inexpensive, the micro computers have excellent graphic capabilities. The maximum word length varies according to the configuration of the microcomputers.

Kinds of Microchips The microchips can be classified as follows: a Micro Processors: These are the most powerful kind. They are almost tiny computers in themselves. Each one ahs a processing Unit, a memory and a special area to handle input and output. Microprocessors are the most important part of the CPU of a modern computer b Memory Chips: These are the common form of computer memory. They are used to hold information either temporarily or permanently. Features of Micro Computers a Its storage capacity is low.

However it uses an interpreter when running high level language because most micros do not have sufficiently large memory to support compliers. Advantages a They are small and portable. Disadvantages a Micros have a limited storage capacity. Workstations generally come with a large, high-resolution graphics screen, at least 64MB Mega bytes of RAM, built — in network support, and a graphical user interface. Most workstations also have a mass storage device such as a dish drive, but a special type of workstation, called a diskless workstation, comes without a disk drive.

In terms of computing power, workstations lie between personal computers and mini-computers, although the line is fuzzy on both ends high-end personal computers are equivalent to low-end workstations. And high-end workstations are equivalent to minicomputers. Like personal computers, most workstations are single-user computers. However, workstations are typically liked together to form a local-area network, although they can also be used as stand-alone systems. Mini Computers The size of the mini-computer is in between the size of micro and main frame computers.

It is more powerful than a micro computer. Mini computers are usually designed to serve multiple users. Today, mini- computers are the popular data processing systems in the field of business and industry. These computers accept all high level languages.

Characteristics 1. It is a general purpose machine with a smaller CPU than a main frame 2. Convert PDF to Txt. Convert PDF to Html.

Convert PDF to Images. Convert PDF to Tiff. Convert Word to PDF. Convert Excel to PDF. Convert Html to PDF.

Convert Images to PDF. Convert Txt to PDF. Version 2. Stay informed about special deals, the latest products, events, and more from Microsoft Store. While there might the need that you have to convert PDF to other formats like. TXT and so on.

Search from the Internet, you can find many PDF converter. However, which one is the best PDF converter? These PDF converter programs comes with vary features and it is hard to choose the best one fit you. No worry! It can easily convert the troublesome format into Word, PowerPoint or Excel files, all while retaining original format, images and fonts.

This is very important for someone who wishes to read or print a PDF file but does not have an advanced application at hand for such task. Furthermore, Nitro PDF converter can be considered quite fast in regard to the rest ones, being able to transform a page in a matter of seconds.

With over ten million users with many more successful conversions, FreePDFconverter is known for its reliability among its loyal user base. While these tools are great for editing a PDF, however, this converter makes no mention of languages other than English thus it may not be calibrated for optical character recognition.

Finally, despite the name, this converter is not free. There are also some limited security functions such as electronic document signing and password protection. Invented by Adobe in the s, the PDF was a proprietary file type protected by patent up until Fortunately, a number of free PDF to Word converters have recently popped up with great success, democratizing this service once and for all.

Alternatively, you can use the features that come natively built-in on the Mac. What's more, is that Adobe Acrobat allows you to preserve your original PDFs by placing password protections or setting file permissions for editing and copying.

Adobe Acrobat is essential for businesses looking to protect their intellectual property, it is for this reason that Adobe remains an industry leader and continues to profit off of their innovative PDF file format. Adobe Acrobat is a paid service that may be out of reach for many looking to simply convert a one-off document here and there. However, for students, most university libraries have subscriptions to Acrobat making it accessible on most university campuses and sometimes even public libraries.

Likewise, many businesses and corporations have subscriptions as well. If you're looking for a free tool — use any of the best free PDF editor software mentioned in our review. By now you should have found a program to handle all your converting needs. Save yourself the future effort by bookmarking this article for next time!

If you'll need just edit a few words, please check out our simple follow-along instructions on how to edit PDF files on Mac and Windows by using build-in tools, Adobe Acrobat, or other online PDF editors. Select the file you want to convert or drop the file into the box you can also choose one from Dropbox or Google Drive. Click the "Convert to Word" button. When the file is ready, download it. Just click the Upload Files button or drop your files into the box up to 20 files. Wait for the conversion process to finish.