Lesson 6

3. Grab and hold the next instruction to be executed
5. Holds data that is being used and the results of calculations or logic
9. Informs the user if an interrupt happened
10. Holds the address of the RAM you are reading or writing from
11. Holds the current instruction being executed
12. This makes the hardware work and is a program
14. Holds the instructions used by the CPU, can also be called primary memory
15. The brain of the computer
16. Something you enter into the computer
18. Carries the address of memory locations that store memory and instructions between the processor and CPU

1. How the registers run programs
2. Transfers binary data between memory locations
4. Signals that control when things happen within a computer are moved by this bus
6. Controls how the data moves between the processor and CPU
7. Memory locations within the CPU
8. Holds any data about the last operation
10. Holds the data read from RAM or are going to write to RAM
13. Carries out calculations and logic
17. The physical components of a computer