Surgical instrument having a feedback system

A surgical instrument comprising:

• an articulable end effector that comprises:
• first and second opposing jaw member for clamping tissue therebetween;
• a cutting instrument that is for, when fired, cutting tissue clamped in the end effector, wherein, when fired, the cutting instrument moves from a first position in the end effector to a second position in the end effector to cut the tissue clamped in the end effector;
• and
• a removable cartridge;
• a drive shaft connected to the end effector that drives the cutting instrument;
• an electric motor connected to the drive shaft that drives the drive shaft;
• a battery unit for supplying power to the electric motor;
• at least one sensor for sensing a status of the instrument;
• a handle housing at least a portion of the battery;
• and
• an alphanumeric display on the handle and in communication with the at least one sensor, wherein the alphanumeric display is for displaying alphanumeric characters that display visually to a user of the instrument a status of the instrument based on an input from the at least one sensor, wherein the alphanumeric display visually displays at least the following status to the user:
• whether the removable cartridge is loaded;
• and
• an articulation angle of the end effector.