DRAW A DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE. NAME THE UNITS

13/4/2019

previously: MATCHING COMPUTER GENERATIONS WITH THE TECHNOLOGY USED TO MANUFACTURE THEIR PROCESSORS

DRAW A DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE. NAME THE UNITS

DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE.

01. INPUT DECICES

These are devices that enter data into a computer and also covert data from human readable form to machine readable form.
Examples of these devices include:

Keyboard/Keypad
Mouse
Trackball
Scanner
Digitizer
Whiteboard
Digital camera
Joy stick

02. Central Processing unit

The CPU-Central Processing Unit is a device made from a collection of integrated circuits. Its main functions are:

Manipulate numeric and logic data (A.L.U - Arithmetic & Logic Unit)
Coordinate processing activities (Control Unit)
Provide temporary storage (Registers, buffers and caches)

03. Primary Storage

These are devices that provide temporary storage for task that are to and from processing. They include:

RAM - Random Access Memory
ROM - Read Only Memory
Logical Drives: These are hard disk partitions that behaves like a RAM once that memory in the RAM has been fully utilized.

04. Secondary Storage

These are devices that permanently store data in the computer or they are portable. They include:

Fixed Storage Devices
1. Magnetic
  1. The Hard Disk
Portable Storage Devices
1. Solid State Storage Devices
  1. Memory card
  2. Flash Disk
2. Magnetic storage devices
  1. Magnetic tapes
  2. Floppy disks
  3. Zip disks
  4. Magnetic tape
3. optical storage devices
  1. Compact disks (CD)
  2. Digital Versatile Disks (DVD)

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05. Output Devices

These are devices that display activities in the CPU to the user and converts information from machine readable form to human readable form. These devices include: