Unit 3.1 Machine code and assembly

Question 1

What is a computer system?

Answer 1

A machine that takes some kind of input and processes it to produce an output. It does so through a combination of hardware and software.

Question 2

What is hardware?

Answer 2

The physical components of a computer that can be seen and touched (tangible).

Question 3

What is a Low level language?

Answer 3

a programming language that is close to the machine’s language. It is designed to be easily understood by the computer’s hardware. This is the lowest level of abstraction.
* Machine Code (binary)
* Assembly (based on mnemonics)

Question 4

What is software?

Answer 4

the set of instructions that are executed by hardware components.

Question 5

What is a high level language?

Answer 5

a programming language that is designed to be easy for humans to read and write. They have built-in subprograms and the notion of data types. This is a very high level of abstraction.
* Python
* JavaScript
* C++

Question 6

What are registers in assembly code?

Answer 6

R0, R1, R2 , small memory cells that can be read from and written to.

Question 7

How do you assign a value to a register in assembly code?

Answer 7

MOV R1, #8
assigns 8 to the Register.

Question 8

How do you print out a value in assembly code?

Answer 8

OUT R1, 4
its always 4

Question 9

How do you get the users input and save it into a register in assembly code?

Answer 9

INP R2, 2
Its always 2

Question 10

How do you add the result of two registers and store it into another register?

Answer 10

ADD R0, R1, R2

Add R1 and R2 then stores the result in R0