Country of Origin: United States of America
3-D Test: 8.9 x 12.7 x 14cm (3 1/2 x 5 x 5 1/2 in.)
Aluminum housing. Plastic keys.
The Manual Data Readout (MDR), along with the Manual Data Keyboard (MDK), was the principal way that Gemini astronauts communicated with the Gemini on-board computer. The numerical windows at the top of the device displayed either addresses or data sent to the computer, when the "enter" key was pressed, or addresses or data read from the computer, when the "read out" key was pressed.
This MDR was part of the Gemini 7 spacecraft, which flew in December 1965. The manufacturer, McDonnell-Douglas Corporation, gave it to the Museum in 1968.
Gift of the McDonnell-Douglas Corporation.