How much RAM can each MC hold?

How much RAM can each MC hold?

• A. 96kB
• B. 64kB
• C. 32kB
• D. 128kB

Answer: (A)

RAM capacity determines how much data, stacks, and buffers the MC can manage during operation. Each MC is built with ninety-six kilobytes of data RAM. This amount is chosen because part of the address space is reserved for system registers and I/O, so not all memory is available for general data. Ninety-six kilobytes provides enough room for multiple tasks’ local variables, several communication buffers, and a reasonable call-stack depth without adding unnecessary hardware cost. Remember that RAM is volatile, so its contents don’t survive power cycles, while the program code sits in non-volatile storage.

RAM capacity determines how much data, stacks, and buffers the MC can manage during operation. Each MC is built with ninety-six kilobytes of data RAM. This amount is chosen because part of the address space is reserved for system registers and I/O, so not all memory is available for general data. Ninety-six kilobytes provides enough room for multiple tasks’ local variables, several communication buffers, and a reasonable call-stack depth without adding unnecessary hardware cost. Remember that RAM is volatile, so its contents don’t survive power cycles, while the program code sits in non-volatile storage.