Main Memory

This area of the organisation stores information and instructions. The information or data is stored in binary. This is a number system that is used throughout the Percy Processor organisation.

The main memory area contains many different memory locations. Each location, or place, can store 8 binary digits (bits ) of data. Memory is measured in bytes and 1 byte is equal to 8 bits. A binary digit can only be 1 or 0.

Memory Brothers

The different areas of memory are looked after by ROMbo and RAMbo respectively. ROMbo and RAMbo, two 8 bit wonders, are known affectionately by the other characters in the organisation as the 'Memory Brothers'.

This pair are usually hungry for bytes, so make sure they don't use up some of yours. RAMbo is good at giving and receiving information or instructions, but only when he is switched on man! Switch him off and he forgets everything.

ROMbo, the meaner of the two, will only give out the same information or instructions - but he never forgets even after being switched off!

Try the exercise - ROMorRAM

Then try the binary investigation site at this location.