Crash Course Computer Science #7 - The CPU

Which of the following have we already seen in a previous episode? Select all that apply.

• ALU

• Registers

• RAM

• CPU

What is the CPU's job?

• store memory

• facilitate calculations

• generate electrical power

• execute programs

A high-level view of looking at the functional blocks of a CPU rather than all the individual wires is called...

• microarchitecture

• macroarchitecture

• synthesization

• memory

How many lettered memory registers were shown?

The first phase that allows the CPU to retrieve its first instruction from RAM.

• Fetch Phase

• Decode Phase

• Execute Phase

In the Decode Phase, the first 4-bits will...

• correspond to the instructions, loading a value from RAM

• open a new program upon start-up

• create a new logic gate that circles back to the ALU

The Execute Phase is when...

• the instructions are actually performed

• when the electric current is killed, or turned off

• instructions are retrieved from RAM

• information is read in the instruction address register

The Control Unit is comparable to a ______, directing all of the different parts of the CPU.

• conductor of an orchestra

• chef in a restaurant

• secretary in an office

• general of the military

In the 3rd example of the Fetch/Decode/Execute cycle, it introduces the ____ into the Control Unit's abilities, enabling calculations to occur.

• ALU

• RAM

• memory

• transistors

The final example of the Fetch/Decode/Execute cycle showed...

• adding values from two registers together

• storing values into RAM

• using the ALU to re-write the Register C value