Please enable JavaScript.
Coggle requires JavaScript to display documents.
COMPUTER SYSTEM system concept (overview ((INPUT (Any data or instruction…
COMPUTER SYSTEM
system concept
overview
Computer
electronic device that accepts data (input), process data, produces information (output) and store the information for future use.
Computer System
A complete, working computer that includes operating system, software and hardware which are necessary to make the computer function.
component
Hardware
System Unit
Output Devices
Input Devices
Storage Devices
software
System Software
Operating System
Utility Program
Application Software
INPUT
Any data or instruction entered into the memory of a computer
PROCESS
Transforming data into information.
DATA
Data that has been processed into a useful form (information).
STORAGE
Location in which data, instructions and information are held for future use
DATA REPRESENTATION
Data
include number, character and symbol, images, audio, video
Information
Processed data that conveys meaning
and is useful to people
using two unique binary digits
computer recognizes only two discrete electrical states
(on and off)
Bit
the smallest unit of data the computer can process.
-Short for binary digit (1 or 0)
-Represents an electrical state (on or off)
-Bit 1 represents On
-Bit 0 represents Off
bite
8 bits that are group together as a unit.
-(example:11110000)
-Is the basic storage unit in memory.
-Represents a character such as a digit, a letter, a punctuation mark or any symbol in computer
-1 byte could be equal to 1 character
1 byte = 8 bits
STORAGE CAPACITY
capacity
Kilobyte
½ page amount of text
Megabyte
100 Megabytes might hold a couple volumes of Encyclopedias
600 Megabytes is about the amount of data that will fit on a CD-ROM disk
Gigabyte
1 Gigabyte of data is almost twice the amount of data that a CD-ROM can hold
1 Gigabyte could hold the contents of about 10 yards of books on a shelf.
100 Gigabytes could hold the entire library floor of academic journals
Terabyte
Terabyte could hold about 3.6 million 300 Kilobyte images or maybe about 300 hours of good quality video
