Object comprises three parts:. a rack-mount system unit containing 5 circuit cards and a power supply. The front panel has a numeric readout and toggle switches for Halt, Reset, and Int. (Weight: 21 lb.). A monitor in a metal case with a clear plastic window over the screen. (Weight: 36 lb.). A keyboard in a metal case. (Weight: 7 lb.). Dimensions are of entire object as shelved.