Please enable JavaScript.
Coggle requires JavaScript to display documents.
1.1 - Components of a CPU, Embedded Systems, Character Set - Coggle Diagram
1.1 - Components of a CPU
Fetch-Execute Cycle
Fetch
Fetches data and instructions from main memory (i.e RAM)
Decode
Inspects the instructions and figures out what needs to be done.
Execute
Executes the instruction that was given
Von Neumann Architecture
Consists of...
Control Unit (
CU
)
Arithmetic Logic Unit (
ALU
)
Maths and logic
Memory (Usually RAM)
Registers
Accumulator
Holds the results of calculations
Program Counter (PC)
Holds the address of the next instruction
Memory Address Register (MAR)
Stores the memory address where data is to be stored or fetched
Memory Data Register (MDR)
Holds data fetched from or to be written to the main memory
Cache
Frequently used data
Both instruction data and program data is stored in the same memory space in binary form
Factors Affecting the Performance
Clock Speed
Number of Cores
Cache Size
Purpose
Fetch and execute instructions
Embedded Systems
computer systems with a dedicated function within a larger mechanical or electrical system.
Washing Machine
Coffee Maker
Character Set
All the different characters a computer can represent.