L A2 Cpu

1,347 views

Published on

Published in: Technology, Business
0 Comments
6 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,347
On SlideShare
0
From Embeds
0
Number of Embeds
41
Actions
Shares
0
Downloads
0
Comments
0
Likes
6
Embeds 0
No embeds

No notes for slide

L A2 Cpu

  1. 1. INFORMATION & COMMUNICATION TECHNOLOGY LEARNING OUTCOMES : Describe the information processing cycle which includes input, process, output and storage. COMPUTER SYSTEM Prepared by : Norhasimah Mohamed – Head of Information & Communication Technology Panel, SMK Sungai Pusu, Gombak 2007 Monday : 02072007
  2. 2. INFORMATION PROCESSING CYCLE INPUT PROCESSOR OUTPUT STORAGE
  3. 3. INPUT <ul><li>Input is any data or instructions that we enter into the computer system for processing </li></ul>Wireless Mouse Web Camera / Web Cam Input Devices
  4. 4. PROCESS <ul><li>The processing unit control all activities within the system. </li></ul><ul><li>For every instruction, the control unit repeats a set of 4 basic operations called the machine cycle. </li></ul><ul><li>fetching, decoding, executing, storing </li></ul>Web Camera / Web Cam Processor
  5. 5. PROCESS <ul><li>Fetching : the process of obtaining a program instructions or data item from memory </li></ul><ul><li>Decoding : the process of translating a program instruction into signals that the computer can execute. </li></ul><ul><li>Executing : the process of implementing the instructions in a program. </li></ul><ul><li>Storing : the process of writing the result to the storage or memory </li></ul>Machine Cycle Storing Fetching Decoding Executing
  6. 6. STORAGE <ul><li>Storage is a location which data, instruction and information are held for future use. </li></ul><ul><li>A storage device is the computer hardware that record or retrieves items to and from storage media. </li></ul>Web Camera / Web Cam Storage Devices
  7. 7. OUTPUT <ul><li>Output is data that has been processed into useful form, called information. </li></ul><ul><li>4 type of output : text, graphic, audio and video. </li></ul>Web Camera / Web Cam Output Devices
  8. 8. CPU – Central Processing Unit <ul><li>Control all activities within the system. </li></ul><ul><li>2 main part: </li></ul><ul><ul><ul><li>Control unit </li></ul></ul></ul><ul><ul><ul><li>Arithmetic-logic unit (ALU) </li></ul></ul></ul>
  9. 9. Relationship of data representation: bit, byte and character. Relationship between component in set of computer using binary code. (number 1 and 0) example : 0010
  10. 10. DATA REPRESENTATION <ul><li>Binary Digit </li></ul><ul><li>Only two discrete states : ‘on’ and ‘off’ </li></ul><ul><li>Represent by two digits, 0 and 1 </li></ul><ul><li>Each 0 and 1 is called a bit in binary system </li></ul><ul><li>‘ on’ and ‘off’, true and false, yes and no. </li></ul>
  11. 11. DATA REPRESENTATION <ul><li>Bit </li></ul><ul><li>Smallest unit of data that the computer can process. </li></ul><ul><li>Represented by the number 1 and 0 </li></ul><ul><li>Byte </li></ul><ul><li>Unit of information buit from bits. </li></ul><ul><li>1 bytes = 8 bits (example : 01000110) </li></ul><ul><li>Character </li></ul><ul><li>One byte represents one character such as A, 7, 9 and +. </li></ul><ul><li>Example : capital letter F is represented by binary code 01000110 that can be understood by the computer system. (01000110= F) </li></ul><ul><li>A byte represents a single character in the computer. </li></ul>
  12. 14. INPUT (PAPAN KEKUNCI) DITEKAN – CONTOHNYA PERKATAAN ‘SAYA’ 1 0 0 1 0 0 1 PEMPROSESAN DAN STORAN BERLAKU DALAM UNIT PEMPROSESAN UTAMA (CPU) DALAM BENTUK KOD BINARI SAYA PEMPROSESAN MENGHANTAR KOD BINARI KEPADA PENCETAK DAN MENCETAK PERKATAAN ‘SAYA’
  13. 15. Ok… Lets continue Our lesson for today.

×