11SEN Fetch Execute Cycle

Similarities between modern day computers and the Manchester Mark 1 computer include (a)   ,​ ​ (b)   , ​ (c)   ​ ,​ (d)   .

• random access memory
• central processing unit
• clock
• stored programs
• graphics card
• heat sink
• LED lights
• network card
• USB-C
• wi-fi

Tick all the statements that are True

• Registers can only be found in the CPU

• Registers are made up of logic gates

• Registers store data that the CPU can access quickly

• Registers store data in ASCII format

Classify the options into the correct category

Groups:

(a) Interpretation

,

(b) Compilation

• Typically used in scripting languages

• Typically used in languages like C, C++, and Java

• Source code must be distributed with the app

• Source code is translated one line at a time

• Execution speed is generally faster

• Entire source code is translated in order to run the app

Drag the options in order of human readability (most human readable to non-human readable):

​ (a)  

​ (b)  

​ (c)  

• source code
• assembly code
• machine code

Answer explanation

high level code is also known as source code and that is what we as humans can read and understand.

machine code is what the computer at its bare metal understands and executes. It is in 1's and 0's.

assembly code is in between high level code and machine code.

Why would you need to compile different versions of the same app when releasing it on Mac and Windows?

RAM stands for

(a)  

Instructions are stored in memory and are retrieved using memory

(a)  

True or False? Consider the instruction LDA 3.

The 3 in the instruction is the value 3.

• True

• False

Answer explanation

LDA 3 means to load the value from memory address 3.

Although the video doesn't mention it, the instruction actually follows a format.

LDA 3

LDA is the opcode and is a command that is in the instruction set of the CPU.

Can you give another example of an instruction?

Summarise the fetch, decode and execute cycle using the example just demonstrated of LDA 3.

Ensure you use specific terms like program counter, memory address, accumulator, data bus, control unit.