This is a black and white image of several circuit board chassis installed in racks. The equipment on the left side of the image contains clock circuits, manual control panel, and test control circuits. The equipment in the center includes read-write circuits and a word drum. The equipment on the right side of the image is the register and control circuits. Light is coming from overhead. Text on the diazo type drawing is "Figure 4", "Clock Circuits", "Read-Write Circuits, 6 bits. Other 8 bits on rear.", "Register and Control Circuits", "Manual Control Panel", "Test Control Circuits", "Test Pattern Generator", and "32,768 Word Drum".
Identification photograph; Publicity photograph
Computer industry--History; Computers--History; Electronic data processing--History; Diazo type drawings