Artifact Details Title Prototyping Disk Catalog Number 102718331 Type Physical object Description On the back side of the disk is the following inscription "a drawn square, ROM 0.4 MT Reg, )DATA BUS, CLOCK CIRCUT, DATA BUS DB, and vaious notations within the square". Manufacturer Unknown Place Manufactured unknown Category Component/Semiconductor/other Credit Gift of Ray Polivka Lot Number X3853.2007