' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 1
Computer System: An Overview
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 2
VDU
Processor
Memory
Disk etc.
Keyboard
Mouse
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 3
CPU−Memory Bus
Cache Memory
Main
DMA etc. Memory
MMU
IO Bus
CPU
IO Controller IO Controller
Mouse IO Controller
Disk I
Graphics Network
Disk II VDU
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 4
Stored Program Computer
• A stored program computer is used to
process data.
• The CPU of a computer follows a stream of
instructions.
• A finite sequence of instructions, called a
program, is used to process data.
• Both program and data are stored in the
computer memory.
& %
Lect 1 Goutam Biswas
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 1
Computer System: An Overview
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 2
VDU
Processor
Memory
Disk etc.
Keyboard
Mouse
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 3
CPU−Memory Bus
Cache Memory
Main
DMA etc. Memory
MMU
IO Bus
CPU
IO Controller IO Controller
Mouse IO Controller
Disk I
Graphics Network
Disk II VDU
& %
Lect 1 Goutam Biswas
, ' $
PDS: CS 11002 Computer Sc & Engg: IIT Kharagpur 4
Stored Program Computer
• A stored program computer is used to
process data.
• The CPU of a computer follows a stream of
instructions.
• A finite sequence of instructions, called a
program, is used to process data.
• Both program and data are stored in the
computer memory.
& %
Lect 1 Goutam Biswas
