COMPUTER
It is an electrical device operating under the control of instruction stored in its own memory, that can accept data, manipulate data according to special rules and store the result
for future…
OR
An electrical device for storing and processing data…
The name is derived from a latin word COMPUTARE, meaning to compute…
POWER SUPPLY:
An electrical device that transform standerd electricity (110-220v,AC) and tolower
(5-12v,DC).Pc Ps range from 90-250watt..
It actually convert AC into DC for their user and microdevices.
DEVICE:
Any component which has some special function is known as Device, and if the
function is by electricity than it is electrical device…
PROGRAM:
A set of instructions and a logical sequence that cause the computer to manipulate
data..
DATA:
Facts and figures...
INFORMATION:
The processed form of data….
Hard Disc is for Information and RAM is for data…
BIOS
Basic input output system
BIOS is burn on chip as a calculator…
INFO PROCESS CYCLE
Input à Output à save à Hard Disc..
WHY WE USE COMPUTER::
v SPEED:
A person playing CHESS with computer do one move and computer checks 10E6 moves in sametime…
c to f Many temp of a Min…
v RELAIBILITY:
Life span to transistor is very long and no change take place by itself…
v ACCURACY:
Garbage IN Garbage OUT…
v PRECISION:
We could go beyond 32 points, e.g 1.31…
v STORAGE:
v COMMUNICATION:
Networking, Internet(for world), Internet(for organization), Metropolitan
Network(for city), LAN(600 m), WAN(exceed 600 m), Repeater is used to
boast up signals…
MODEM= MOdulator DEModulater
v SECURITY:
Encryption