Test 2.1.1-2.1.4

MAR

• Register where the address of the next instruction is stored.
• Register where the data related to the current instruction is stored.
• General-purpose register used to save results of instructions.

MDR

• Register where the data related to the current instruction is stored.
• General-purpose register used to save results of instructions.
• Component that carries the contents of the RAM back to the CU.

ACC

• General-purpose register used to save results of instructions.
• Component that carries the contents of the RAM back to the CU.
• Component that carries the address from the CU to the RAM.

Data Bus

• Component that carries the contents of the RAM back to the CU.
• Component that carries the address from the CU to the RAM.
• Component needed to access both the instruction and the related data.

Address Bus

• Component that carries the address from the CU to the RAM.
• Component needed to access both the instruction and the related data.
• Container of the CU, ALU, MAR, MDR, and clock.

RAM

• Component needed to access both the instruction and the related data.
• Container of the CU, ALU, MAR, MDR, and clock.
• Component that passes both the instructions and the data to the ALU.

CPU

• Container of the CU, ALU, MAR, MDR, and clock.
• Component that passes both the instructions and the data to the ALU.
• Component of the CPU that controls the frequency of the FDE cycle.

CU

• Component that passes both the instructions and the data to the ALU.
• Component of the CPU that controls the frequency of the FDE cycle.
• Unit of measurement for the CPU's clock.

Clock

• Component of the CPU that controls the frequency of the FDE cycle.
• Unit of measurement for the CPU's clock.
• Part of the CPU that performs additions and logical comparisons.

Gigahertz

• Unit of measurement for the CPU's clock.
• Part of the CPU that performs additions and logical comparisons.
• In the FDE Cycle, step that collects data from primary memory.