Key Words

Key Words

1. CPU- Fetches, decode and executes instructions in a computer system

2. Von Neumann Architecture- Contains CPU ALU, registers pc, Input and output methods, External storage,Control U

3. MAR- Memory Address Register- Hold address (location) of next instruction to be executed/already been executed

4. MDR- Memory Data Register- Hold next instruction to be executed?already been executed

5. PC-Program Counter- Holds the location of the next instructions/data address in main memory

6. Accumulator-Register that stores the output of the ALU

7. ALU-Arithmetic Logic Unit-Performs aithmetic calculations and logic functions

8. CU- control Unit- Controls the flow of data transfers

9. Cache-Holds frequently/commonly used data. Acts as an intermediary between CPU and RAM

10. Cores- Allows for more applicatios to run simultaneously. Number of cores multiples the number of instruction exxecuted per second

11. Clock Speed- How many instructions are executed per second, Measured in Hertz (Hz), 1 GHz = 1 billion instructions executed per second

12. Cache Size- Size of cache. Large the cache size more frequently/commonly used instructions can stored, resulting in faster fetching of data

13. Embedded System- A computer system embedded onto a device.Provides specific, pre-defined functions and is cheaper than a computer system

14. RAM- Random access memory- A volatile storage holding programs and data currently in use

15. ROM- Read Only Memory- A non volatile storage wich loads the boot up instrucions for the computed

16. Virtual Memory- Simulatd memory which acts like RAM but is located on Hard drive. Allows for more applicaions to run simultaneously and lets more memory be used than there is in the system

17. Flash Memory- An electronic non-volatie computer storage that can be disconnected from a power supply