Match these CPU related terms with their descriptions.

memory buffer register

memory address register

system bus

opcode

program counter

control unit

D flip$-$flop

instruction set architecture

a digital logic component often used in

computer registers

responsible for fetching program instructions

connects the CPU to memory

specifies the instructions that the computer

can perform

group of bits that tells the computer to

perform an operation

keeps track of the next instruction to be

fetched

holds the address of the data to be

transferred

holds the actual data to be read from or

written

can cause throughput delays

carries out program instructions