computer systems harware
- Created by: Georgina
- Created on: 13-02-15 10:20
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- Computer Hardware
- What is it ?
- Provide the physical mechanisms to...
- Input + output data
- manipulating data
- electronically controlling various input, output + storage
- Provide the physical mechanisms to...
- Compnonents
- CPU - Central Processing Unit
- Comprised of 3 primary sub-units
- 1) ALU - Arithmetic Logic unit
- Performs arithmetic and boolean logical operations
- 2) The control Unit
- control the processing of instructions and the movement of internal CPU data from one register to another
- 3) The interface unit
- move program instructions and data between the CPU and other hardware components
- 1) ALU - Arithmetic Logic unit
- Comprised of 3 primary sub-units
- Storage
- Hard disk
- CD/DVD
- USB flash stick
- memory space in server
- Input devices
- Keyboard
- mouse
- storage units
- Output devices
- monitor
- printer
- speaker
- storage units
- Buses
- physical connection that makes it possible to transfer data from one location in the computer system to another
- Internal memory
- RAM - Random access memory
- ROM - Read only memory
- architecture
- CPU - Central Processing Unit
- Key points
- Performance + costs = Key when designing systems
- What is it ?
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