GCSE Programming Resources (14-16 years)
- An editable PowerPoint lesson presentation
- Editable revision handouts
- A glossary which covers the key terminologies of the module
- Topic mindmaps for visualising the key concepts
- Printable flashcards to help students engage active recall and confidence-based repetition
- A quiz with accompanying answer key to test knowledge and understanding of the module
A-Level Software Resources (16-18 years)
- An editable PowerPoint lesson presentation
- Editable revision handouts
- A glossary which covers the key terminologies of the module
- Topic mindmaps for visualising the key concepts
- Printable flashcards to help students engage active recall and confidence-based repetition
- A quiz with accompanying answer key to test knowledge and understanding of the module
The following program will demonstrate the INPUT and OUTPUT instructions of the LMC.
Running the program: the program simply INPUTS a number, then OUTPUTS it.
INP
OUT
HLT
Instructions
- Copy the three-line program above and paste it into the Program box.
- Click on the “Assemble Program” button.
After the program is assembled you should see RAM addresses 0 to 2 contain the machine code instructions shown in the image.- Click on the RUN button.
- When prompted, INPUT a number.
- If you have difficulty following what is happening, read the explanation below and use STEP instead of RUN so you can follow each step.
Explanation
INP //the input value is copied into the accumulator.
OUT //the value in the accumulator is sent to the OUTPUT.
HLT //the program halts.
Example results
INPUT = 2
OUTPUT = 2