This document provides a revision for Test 2 covering several topics: 1. It reviews software types, operating systems, tasks of operating systems, and definitions of booting, software, and application software examples. 2. It also summarizes internet components, benefits, disadvantages, and acronyms. 3. Finally, it describes the central processing unit and functions of the ALU, memory unit, and control unit.

1. REVISION WEEK FOR TEST 2

2. Section A 1.Software is also known asprogram.2. URL is a/an address of homepage 3. Which one of the graphic software used to illustrate using points, lines and curve?Adobe illustrator

3. Section B 1.List two types of software.i. Applications software ii. System software 2.List two operating system used by IBM computeri.Windows 7, Windows XP, Windows Vistaii.Mac OS, Linux, Redhat

4. Section B 3.Givetwotasks of operating systemi.Control centre for input, processes and output. ii. Handles errors iii. Command centre iv. Manages files

5. Section B 4. What do you understand by booting up? Booting up means restarting the computer or when the computer system is started. 5. What do you mean by software?Software is an instruction for the processor.

6. Revision test 6. List two examples of application software below : Word processing Microsoft word and Word Perfect Spreadsheet Microsoft excel and Lotus 123 Database Microsoft acess and Dbase Multimedia Microsoft powerpoint and Movie maker

7. Revision test 7. List one examples of application software below: a. Graphic software Raster graphics Adobe photoshop Vector graphics Adobe illustrator Microsoft paint b. Desktop publisher Indesign Microsoft publisher

8. Revision test 8. List one use of word processingWord processing is used to edit and create documents. 9. List one use of spreadsheet. Spreadsheet is used to store numerical data and set formulae to perform calculations.

9. Section C, Q1 Internet is a very powerful resource that is becoming increasingly indispensible to various industriesm private companies, government bodies, interest groups and individuals around the world.

10. Section C, Q1 1. a.Name three items that connect to the internet. i. Computer ii.Modemiii.Telephone line iv.Internet Service Provider v. Web browser

11. Section C, Q1 b. Name two examples of web browser.Mozilla firefox safari Opera Internet explorer google chrome

12. Section C, Q1 C. List two benefits internet usage.i. Search for useful information, read the latest news and updates. ii. Watch movie and video clips, chat with people from around the world. iii. Read message that people have sent to you.

13. Section C, Q1 List two disadvantages using internet.i. Become plagiarism , ii.Bad undesirable contentiii.Sometimes web page content virus, trojan and spyware

14. Section C, Q1 e. What do WWW, URL and ISP mean ? WWW World Wide Web URL Universal Resource Locator ISP Internet Service Provider

15. Section C, Q1

16. Section C, Q2 The figure below shows a Central Processing Unit which consists of the ALU, part A and part B. INPUT OUTPUT A ALU B

17. Section C, Q2 a.Name the part label A. Immediate Access ( Memory unit ) b.Name the part label B. Control unit INPUT OUTPUT A ALU B

18. Section C, Q2 a.Name the part label A. Immediate Access( Memory unit ) b.Name the part label B. Control unit

19. Section C, Q2 c. What is the function of label A?To hold program instruction and data before processing . d. What is the function of label B?Control data flow between different parts of a computer.

20. Section C, Q2 e.What is the function of label ALU? Processes data by performing calculation arithmetic and logical operations. f. The speed of computer is measured in hertz.

21. Reminder 2ndMonthly test on 19 / 09/ 2011 , Monday. Don’t forget to read the topic below : Types of software Application software Internet Central processing unit Ram and Rom