Revision

DATA PROCESSING SSS2 FIRST TERM

WEEK 1

REVISION

Contents

History of computing

Abacus – Napier’s Bones – Slide Rule – Schickard’s Calculating Clock – Pascal’s calculator – Leibnitz Multiplier – Analytical Engine – Herman Hollerith Punch Card – John Von Neumann Machine

Concepts of Number System: Binary (or Base 2) – Octal (or Base 8) – Decimal (or base 10) – Hexadecimal (or base 16)

History of Computer

First Generation – Vacuum Tube

Second Generation – Transistors

Third Generation – Integrated Circuits

Fourth

Generation – Microprocessor

Fifth Generation (Artificial intelligence)

Classification of Computer

Classification Based on Type (Analogue, Digital and Hybrid)

Classification Based on Size (Micro, Mini, Mainframe and Super Computers)

Classification Based on Purpose (General and Special)

ICT Application in Everyday Life

Uses of ICT (Education, Banking, Industry, Commerce)

Impact of ICT on the Society

• Faster Communication Speed
• Lower Communication
• Effective Sharing Information
• Paperless Environment
• Borderless Communication
• Social Problem

REVISION QUESTIONS

1. Identify the Concrete device used in computing.
2. Convert the following decimal to Hexadecimal i. 4D5           ii 5F
3. Convert the following decimal to Octal             i. 476           ii 57
4. Convert the following decimal to Binary  i. 35.5                    ii 37
5. Who invented the Pascal Calculator?
6. What is the name of the first mechanical calculating device?
7. How many generations of computers do we have?
8. List the device or major component that was used to build the computer in each generation.
9. Another name for the Fifth generation computer is ______________
10. List the classification of computers according to types, size and functionality
11. State five (5) impacts of ICT on society.
12. List the benefits of ICT to society.
13. List the procedure for information processing.
14. List five advantages and three disadvantages of using computers for information processing.
15. Define information transmission and list the methods of information transmission with five examples each.
16. List three types of information transmission.
17. Define an Operating System and give four examples of an operating system.
18. Mention five types of operating systems (OS).
19. State four functions of an Operating System.
20. State the steps on how to carry out the following in MS- Word.

• Load / open an MS Word application
• Open both new and existing document
• Save a document
• Retrieve an existing document
• Increase Font size, Change Font style, and Underline
• Change the case of a text
• Apply the following font effect; superscript, subscript, strikethrough.

21. Differentiate between Word processing and Word processor.
22. List four examples of word processors and mention four examples of MS Office.
23. List five major methods involved in copying a document in MS Word.
24. List five features of a typical Word Processor.
25. Define a Spreadsheet and state three uses of a spreadsheet.
26. List five examples of a spreadsheet package.
27. State the steps on how to carry out the following in MS-Excel

• To delete cells, rows and columns
• To insert cells, rows and columns
• Find data or find and replace data

28. Differentiate between Database and Database Management Systems.
29. List five examples of a DBMS.
30. Define the following basic terms used in database management systems;  Character, field, record, database file, key
31. State three uses of a database management system.
32. Define Computer ethics and state three Computer room Management Ethics.
33. List three proper ways of using the computer and four ways of misusing computers.
34. State four safety measures for computer users
35. State four safety rules when using the computer lab.