Uploaded on

 

More in: Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
1,088
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
5

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 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. INFORMATION PROCESSING CYCLE INPUT PROCESSOR OUTPUT STORAGE
  • 3. INPUT
    • Input is any data or instructions that we enter into the computer system for processing
    Wireless Mouse Web Camera / Web Cam Input Devices
  • 4. PROCESS
    • The processing unit control all activities within the system.
    • For every instruction, the control unit repeats a set of 4 basic operations called the machine cycle.
    • fetching, decoding, executing, storing
    Web Camera / Web Cam Processor
  • 5. PROCESS
    • Fetching : the process of obtaining a program instructions or data item from memory
    • Decoding : the process of translating a program instruction into signals that the computer can execute.
    • Executing : the process of implementing the instructions in a program.
    • Storing : the process of writing the result to the storage or memory
    Machine Cycle Storing Fetching Decoding Executing
  • 6. STORAGE
    • Storage is a location which data, instruction and information are held for future use.
    • A storage device is the computer hardware that record or retrieves items to and from storage media.
    Web Camera / Web Cam Storage Devices
  • 7. OUTPUT
    • Output is data that has been processed into useful form, called information.
    • 4 type of output : text, graphic, audio and video.
    Web Camera / Web Cam Output Devices
  • 8. CPU – Central Processing Unit
    • Control all activities within the system.
    • 2 main part:
        • Control unit
        • Arithmetic-logic unit (ALU)
  • 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. DATA REPRESENTATION
    • Binary Digit
    • Only two discrete states : ‘on’ and ‘off’
    • Represent by two digits, 0 and 1
    • Each 0 and 1 is called a bit in binary system
    • ‘ on’ and ‘off’, true and false, yes and no.
  • 11. DATA REPRESENTATION
    • Bit
    • Smallest unit of data that the computer can process.
    • Represented by the number 1 and 0
    • Byte
    • Unit of information buit from bits.
    • 1 bytes = 8 bits (example : 01000110)
    • Character
    • One byte represents one character such as A, 7, 9 and +.
    • Example : capital letter F is represented by binary code 01000110 that can be understood by the computer system. (01000110= F)
    • A byte represents a single character in the computer.
  • 12.  
  • 13.  
  • 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’
  • 15. Ok… Lets continue Our lesson for today.