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Unit 1: Introduction to Computers

1.3 Summary
Notes
• Technically, a computer is a programmable machine. This means it can execute a programmed
list of instructions and respond to new instructions that it is given.
• Some of the major parts of a personal computer (or PC) include the motherboard, CPU, memory
(or RAM), hard drive, and video card.
• Most desktop computers use a monitor with a cathode tube or liquid crystal display. Most
notebooks use a liquid crystal display monitor.
• Modems are measured by the speed that the information is transferred. The measuring tool is
called the baud rate. Originally modems worked at speeds below 2400 baud but today analog
speeds of 56,000 are standard.

1.4 Keywords

Digital Camera: Digital camera allow you to take digital photograph.
Sound Cards: Sound cards allow computers to produce sound like music and voice.
Network Cards: Network cards allow computers to connect together to communicate with each
other.

1.5 Review Questions

1. Write short notes on RAM.
2. What is modem?
3. What do you mean by memory? Explain.
4. Discuss about the disk drives.

Answers: Self Assessment
1. electronic 2. random access memory 3. video cards
4. network cards

1.6 Further Readings

1. Devarajan, (G). Information technology in libraries. Delhi: Ess Ess, 1990.
2. Ravichandra Rao, (IK): Library automation. New Delhi: Wiley Eastern.
th
3. Rowley, (J.) The electronic library. 4 ed. London: LA, 1998.
4. Satyanarayana, (NR): A manual of computerisation in libraries.

http://www.irmt.org
http://web.uettaxila.edu.pk
http://www.businessdictionary.com

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