1.1 Machine Code

Question 1

What is Machine code ?

Answer 1

A binary programming language used by a CPU.
All code is eventually converted to machine code.

Question 2

What is Assembly language ?

Answer 2

A low level programming language.
Each command maps directly to a machine code
instruction.

Question 3

What does the INP command do?

Answer 3

Input a number to the accumulator

Question 4

What does the STA x command do?

Answer 4

Store the number in the accumulator in memory location x

Question 5

What does the ADD x command do?

Answer 5

Adds the number in location x to the accumulator

Question 6

What does the OUT command do?

Answer 6

Output the number in the accumulator

Question 7

What does the DAT command do?

Answer 7

Create a memory location with a name

Question 8

What does the BRA X command do?

Answer 8

Branch – go to memory location X

Question 9

What does the BRP X command do?

Answer 9

Branch if positive – go to memory location X if the
accumulator is 0 or above.

Question 10

What does the BRZ X command do?

Answer 10

Branch if zero – go to memory location X if the
accumulator is exactly 0.