Basic Computer And Memory Unit

 

DEFINATION OF COMPUTER

Computer is an electronic machine which is generally used to calculations. It takes any data as an input and after a specific processing given the related output.

 

DEFINATION OF KEYBOARD

 

 

Keyboard is the main device for giving the instructions between the user&computer. It has the number of keys that are further divided into 5 types &these keys are:

 

104 to 109

112 to 118 ►multiple keyboard

Types of keys are:-

Alphabetic keys =AtoZ, a to z

Numeric keys = 0 to 9

  • Directional keys = Left arrow key, right arrow key, up arrow key, down arrow key.
  • Functional key = F1 ToF12
  • Special keys = Enter, alt, space, ctrl.etc.

 

How many types of output units?

Many types of output units like

  • Monitor
  • Printer
  • Plotter

 

How many types of monitor?

There are three types of monitor

  • Simple monitor
  • Plasma screen monitor
  • Liquid compact disk monitor(LCD)

 

 

HOW MANY TYPES OF COMPUTER

 

FOUR TYPES OF COMPUTER

 

  1. Super Computer
  2. Mainframe Computer
  3. Micro Computer
  4. Mini Computer

 

 

MAIN COMPONENTS OF COMPUTER                       

 

 

  1. P.U = Brain of computer
  2. Monitor = Display
  3. Keyboard = Input
  4. Mouse = cursor
  5. UPS = Accessories

 

FULL FORM OF BASIC AND COMPUTER

 

B = Business

A = All purpose

S = Symbolic

I = Instruction

C = Code

 

C = Common

O = Operating

M = Machine

P = Processing

U = used for

T = Technology

E = Electronic, Educational

R = Researc

CHART OF COMPUTER

MEMORY UNIT

DEFINATION OF MEMORY UNIT

 

The data is stored in storage devices for processing data was well as for future references. There are two types of storage device.

 

  • Primary storage devices
  • Secondary storage devices

 

PRIMARY STORAGE DEVICES

Primary memory is also known as internal memory or main memoryplaced on motherboard.

Hence primary memory’s directly accessible to the CPU for input of row data and output process data from the c.p.u.

For e.g. Ram, Rom

 

What is Ram?

 

Ram stand for random access memory. Ram function as a temporary storage area for data and instruction. It 10   it content when the power is not available and is therefore called volatile memory.

 

What is Rom?

 

Rom is the short for read only memory. A computer can only received data from it and cannot write anything it. Rom is designed to store some very important programmes permanently which helps in starting the computer various types of rom used are these days. There are P Rom, E Rom, E P Rom etc.

 

For this person whose like our website Please    Donate …

Leave a Reply

error: This Plugins Block Your IP Address so don\\\'t copy