Introduction to Computer
-
A
computer is an electronic device which takes input through input device; it
gives output through output device.
-
It also stores data for further processing.
-
Computer works with “0”, “1” (Binary Language).
-
Like all electronic device computer works with
DC power.
Block Diagram of Computer.
HARDWARE COMPONENTS
Components of Computers
-
Processor
-
Motherboard
-
Primary Storage Device
i)
RAM (Random Access Memory)
ii)
ROM(Read Only Memory)
-
Secondary Storage Device
i)
HDD (Hard Disk Drive)
ii)
Optical Device (CD Rom, DVD, etc)
iii)
Floppy Device
-
SMPS (Switched Mode Power Supply)
-
Input Device
i)
Keyboard
ii)
Mouse
-
Output Device
i)
Monitor
PROCESSOR & PRIMARY STORAGE DEVICE
Processors
-
It is the brain of the computer
-
It is a semi-conductor device
-
It contains the complete CPU (Central Processing
Unit) in a single chip.
-
It perform arithmetic an logical function
Processor Specification
-
Speed (measured
in Hz (Hertz))
-
Width (measured
in bits Ex: 8bit, 16bit, 32bits or 64bits)
-
FSB Speed(Front Side Bus) (measured in Hz)
-
Cache Memory (measured
in Kbytes(Kb)/Mbytes(Mb))
*Note: - Detail about “Bits” and Kb, Mb is
below.
