Hardware and Software Flashcards
(22 cards)
Cpu
Computer processing unit
To fetch and execute instructions
Describe what is meant by 3MHz CPU
3MHz is the clock speed/how fast the processor is
Indicates how many instructions may be processed In Each second
What is a quad core CPU
The computer has four cores which are independent processors within the cpu working simultaneously
What does ROM stand for
Read only memory
What does ram stand for
Random access memory
RAM or ROM?
Programmes currently in use are located here?
RAM
RAM or ROM?
Al the content is lost when the power is turned off
RAM
RAM or ROM?
It is used to boot up the computer when is is switched on
ROM
Storage device
Device used to store data
Output device
Device used to present information
Input device
Device used to input device into a computer
What 3 tasks are carried out when the cpu is processing data
Fetch decodes and executes instructions
Explain how the clock speed of a cpu affects its performance
Th higher the clock speed the faster the cpu will run
Represents the number of instructions a cpu can process in a given time
Explain how the cache size of a cpu affects its performance
The more cache the cpu has the faster the programs run
Cache is faster than memory and contains frequently accessed data
What is custom written software?
Software created especially for a user
Why would a restaurant might want to use custom written software
Appropriate software may not exist
Existing software may not be compatible with restaurants hardware
Antivirus
It scans the computer periodically to check if any software has been installed which contains code that can harm the computer
Disk defragmenter
Moves parts of files around so that all parts of a file are stored together
Free space is collected together
System cleanup
Delete programmes/files which are no longer used
Automatic update
Checks on the internet for new versions of programs which are installed and if there are any downloads them
State 4 functions of an operating system
Manages memory
Provides a platform for software to be run
Manages peripherals used by the system
Provides interfaces between user and computer
What is open source software
The source code is distributed with the software
The customer can modify the source code
The customer can redistribute the source code
