Hard warE

HARD WARE*

Hardware*Central Processing Unit (CPU).Input Units.Output Units.Memory Unit.Storage Units.Control UnitStorage UnitALUInput UnitsOutput UnitsMemory Unit CPU

Central Processing Unit (CPU)*Also called Microprocessor is the central chip that determines the processing power of the computer.The brain of the computer.Determines how fast the computer is.Interprets and executes the instructions contained in a program.It is measured by Mega Hertz (MHz) or Gega Hertz (GHz) speed. Manufactures: Intel, AMD, Motorola, etc.

Central Processing Unit (CPU)*

Input Devices*

Output Devices*

Input /Output Devices*

Storage Capacity Representation*All information processed by computer is handled and stored in the binary form 0 or 1, which is called a bit.A Byte: a memory unit (8 bit), which represents a character or a symbol on the keyboard. Its the unit used to measure Memory Capacity.Kilobyte (KB): 1024 (210) byte.Megabyte (MB): 1024 (210) Kilobyte.Gigabyte (GB): 1024 (210) Megabyte.

Exercise:How many words in the memory, if the memory capacity was 256 KB, and each word is 8 Letters?

Memory Unit*

Storage UnitsInclude disks and other storage media used to store data permanently.

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Storage Units Cont.Include disks and other storage media used to store data permanently.

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Storage Units Comparison*Higher SpeedHigher Cost