Press "On" and "Clear" at the same time.
Yes, solving math problems on a Scientific calculator does use memory.
Memory Store. Save the displayed value in the memory.
You can subtract whatever number you have entered into memory.
Memory Recall/Clear
memory/recall
The MC button should clear the memory.
It means 'memory clear'. Doing some calculations on pocket calculator you can save some results in memory to use it later. That button erase everything stored in the memory.
it meas memory
if you are using an algebra calculator you press, 2nd, +, 7, 1, 2 enter
you cant
MRC stands for Memory Recall.
it means memory