Internal Hardware of a Computer (AQA A-Level Computer Science): Flashcards
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Practise the cards
10 cards from this deck
Microprocessor/chip
Microprocessor/chip
Microscopic electronic circuits used to build computers
Embedded system
Embedded system
Computer chip built into a device to control it
CPU's main function
CPU's main function
Executes instructions; brain of the computer
Clock speed measurement
Clock speed measurement
Hertz (Hz); determines how fast processor operates
RAM's key property
RAM's key property
Volatile - contents lost when computer is turned off
ROM's key property
ROM's key property
Non-volatile - contents retained when power is off
Data bus
Data bus
Bi-directional; carries data between processor & memory/I/O
Address bus
Address bus
Uni-directional; carries memory addresses from processor
Control bus role
Control bus role
Bi-directional; ensures data goes right place at right time
Von Neumann architecture
Von Neumann architecture
Instructions & data in same memory, accessed via same buses