Crash Course Computer Science #8 - Instructions & Programs

What is the beating, ticking heart of a computer?

• ALU

• CPU

• RAM

• Control Unit

In the first example for RAM, what do the first 4 digits represent?

• OpCodes

• Registers

• Addresses

What does the example of RAM from last episode do?

• add two numbers together, then stores them

• subtracts two numbers before rewriting it in RAM

• creates a new opcode for one of the registers

• multiplies the numbers, then stores them

Which instruction tells the computer to stop?

• LOAD A

• JUMP_NEG

• HALT

• LOAD B

When the instructions prevent you from getting to the HALT instruction, it's called...

• infinite loop

• crash

• lag

• broken circuit

In the RAM example, what does adding the JUMP_NEG instruction do? Pick 2.

• allows the ALU to flag a negative number

• lets the computer skip instructions for negative numbers

• creates an infinite loop

• prevents the ALU from communicating with RAM

What's the maximum amount of instructions that an 8-bit RAM could use?

(a)  

One strategy that modern CPUs use to create bigger instructions, with more bits, called....

• instruction length

• instruction quantity

• address length

• 32-bit name

What year did Intel release the 4004 processor?

• 1965

• 1971

• 1975

• 1978

What's the next episode about?

• extra things added to processors to make them better

• circuits

• how to code software like C++