Computer science topic 5 computer oganisation

What does the control bus do?

What does the address bus?

What does the data bus do?

General purpose registers

Arithmetic logic unit

control unit

Program counter

Current instruction register

Memory address register

Memory buffer register

What is inside the cpu?

What does an I/O Controller do?

What are device drivers?

What does memory read, memory write, bus request, bus grant and clock do?

What is a bus?

What is memory divided up into?

What are the usual lengths of words

What is the stored program concept?

What is von Neumann architecture?

what is Harvard architecture?

Why do most general purpose computers use von Neumann architecture?

What is used to synchronise the operations of the processor components?

What does the status register do?

What are the steps of the fetch-execute cycle?

Name all the levels of cache

What is an instruction set?

Name the different types of instructions

what is machine code

What is in the op code

What is the operand?

What is the addressing mode

What is immediate addressing?

What is direct addressing?

What is assembly code?

What is used in assembly language rather than if statements?

What does branch do?

How do you loop in assembly language?

What does a shift operation do?

What are the two types of Barcode readers?

What is (UPC-A)/(EAN) used for?

What is code 128 used for?

What is the difference between code 128 and (EAN)/(UPC-A)

What are the two parts of an UPC-A / EAN code?

What does QR code stand for?

What are the three patterns between left and right sides of bar codes?

Where does a bar code start?

What goes between the end of the bar code and the guard bars?

What is a check digit?

What are examples of uses for QR codes?

How does a digital camera work?

How is colour detected on a camera?

How does a laser printer work?

What does RFID stand for?

How does an RFID system work?

What are the uses of RFID tags?

What is a passive tag?

What is an active tag?

How do magnetic storage devices work?

How do Hard disks work?

What are the causes of disk latency?

How does a CD work?

How can you store more space on a disk?

How does NAND flash memory cells work?

How do blocks of flash memory cells work?