1.1 Component 1

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computer science component 1 OCR Craig and Dave summary videos.
Olivia Szydlo
Karteikarten von Olivia Szydlo, aktualisiert more than 1 year ago
Olivia Szydlo
Erstellt von Olivia Szydlo vor etwa 5 Jahre
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Zusammenfassung der Ressource

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computer an electronic device that takes an input, processes the data and makes an output
computer program a set of instructions that allow a process to be carried out
memory stores a program and data
CPU central processing unit fetches, decodes and executes data
fixed program a program with a set purpose.
programs a collection of instructions that perform a specific task
ALU arithmetic logic unit performs calculations and logical decisions
CU control unit sends signals to tell the other components how to respond to the instructions that have been sent to the processor
cache temporary storage of instructions and data that have been read and written from the main memory
PC program counter holds the address of the next instruction in the main memory
MAR memory address register holds the address of where the data is to be fetched or stored
MDR memory data register holds the data fetched from, or to be written in memory
ACC accumulator holds the results of calcualtions
stored program computer a device with changeable programs
clockspeed number of instructions you could get in a given time.
core recieves instructions and acts upon them
embedded system a computer system with a dedicated function within a larger mechanical or electrical system
microcontrollers CPUa with integrated memory
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