Please enable JavaScript.
Coggle requires JavaScript to display documents.
Computer Science - Computer System, Topic 4 : Pages 1 - 10 (Components of…
Computer Science - Computer System, Topic 4 : Pages 1 - 10
Components of a computer
-
-
-
Storage
Stores programs and files long term, even when they are not in use.
-
HDD - Hard Disk Drive
Used to store large amounts of data, slower and less efficient use of power compared to the SSD.
SSD - Solid State Drive
Used to store smaller amounts of data compared to HDD'S. They have no moving parts, they are faster at accessing data (than HDD). More power efficient.
Hardware and Software
Computer Hardware - Physical components, including electrical circuits, that a computer is assembled from.
Computer Software - A sequence of instructions that is understood and executed by computer hardware.
-
Boolean Logic
Boolean is true or false,
Three gate Types AND,NOT,OR.
Truth Table
A table showing the output from all possible combinations of input through a logic gate or a number of logic gates.
-
Purpose of an OS
The OS is responsible for managing: Processor access / allocating processor time, memory management, input / output devices, applications, file management, security.
-
-
Software Classification
System Software
Software that controls / manages the operation of a computer system. Deals with the running of the computer system. System software is designed to support the running of the application software. These are programs that are needed in order for the computer to function.
-
System software include Operating System, Utilities, Libraries, Programming translators.
-
Operating system - OS
-
-
Computer systems will do multiple task at the same time (music, messaging friends).
-
-
-