Saturday, 8 June 2013 | 22:18 | 0 Words
Assalammualaikum.Dear readers,previous post I’ve posted about myself and now I’ll tell about topic
that our lecturer have taught.This is and interesting topic and I hope you’ll
enjoy it reading.
Computer Hardware Basics
- I’ve learned about computer operations,information processing cycle,computer components and the characteristics of computer
- I’ve learned that it have 4 basics operations that a computer can perform which is Input ,Output,Processing and Storage.The other one is Communication.
A computer
converts data input to become(output).Processing requires a set of instructions
know as programs and software.A computer holds data,instructions and information
in storage for future use.
Computer can be divided into two:
Software and Hardware
- Software-Known as program.It tools the computer what task to perform and to do it.It includes System Software and Application Software.
- Hardware-The electrical,electronic or mechanical parts of a computer.It includes input devices,output devices,system unit,storage devices and communication devices.
Computer Hardware Basics:
Number
Systems-Decimal,Binary,Octal,Hexadecimal
1. How do computers represent data
---> A bit
is the most basic unit of information in a computer.
– It is a state of “on” or “off” in a digital
circuit.
– Or “high” or “low” voltage instead of “on” or
“off.
----> A byte
is a group of eight bits.
– A byte is the smallest possible addressable
unit of computer storage.
2.
Decimal Number
Systems
-It uses ten numerals to form a string of numbers.
The values are 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9
- Decimal numbers have a base or radix of
ten, written as X10 where X is any number string/
pattern.
3.
Binary Number
Systems
- It uses two numerals/ digits to form a string of
numbers. They are 0 and 1. Also known as BITS
-Example : 1102
4.
Octal Number
Systems
-It uses eight numerals to form a string of numbers.
They are 0, 1, 2, 3, 4, 5, 6 and 7.
- Example : 458
5.
Hexadecimal
Number SystemsHexadecimal Number Systems
- It uses sixteen symbols (numerals + letters) to form
a string of numbers. They are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D and E. Also
known as Hex.
- Example : 35B16
