HP Calculator

Hp8s scientific calculator keysThe hp8s scientific calculator has one independent memory. M is displayed when there is a value in memory. The following table explains how to store a number in memory and how to delete it.Press c/CE on the hp8s - to clear the display or cancel the current calculation without clearing the memory.Press x-m on the hp8s - to store the displayed value in memory.Press m+ on the hp8s - to add the displayed value to memory.Press rm on the hp8s - to retrieve the contents of memory - to determine its value or include it in the calculation.Press inv, then x-m on the hp8s - to display the contents of memory and replace it with the value that was displayed before the keys were pressed.Press AC on the hp8s - to clear the display and the memory