DD-50 means 50-pin D-SUB
series D subminiature connector in
Electronics
Similar to DD-50
AC - Amplifier Combination
AC - Autonomous Control
AC - Automatic Control
ACA - Anisotropically Conductive Adhesive
ACAD - Anodized Ceramic Aluminum Diaphragm
ACB - Air Circuit Breaker
ACC - Actual Carriers Created
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