Saturday, September 24, 2011

A-166 Dual Logic Module

" A Logic Gate is an idealized or physical device implementing a Boolean function.
It performs a logical operation on one or more logic inputs and produces a single logic output. Logic gates are primarily implemented using diodes or transistors acting as electronic switches. "

The A-166 Dual Logic Module is a double logic device that combines digital control / clock signals.
A typical application of this module is the combination of digital signals of the A-100 gates, clocks and triggers to obtain "gated" clocks or rhythmic clock patterns.

It contains 2 identical units with 3 inputs for each unit.
The logical states of the inputs ("1" = high / "0" = low) are linked together in 3 ways: AND, OR, EXOR (exclusive OR).
The input sockets of each triple unit are "normalized", i.e. the switched contact of socket 2 is connected to input 1 and the switched contact of socket 3 is connected to input 2.
The three functions are available simultaneously at three outputs with LED display of the output states.

Additionally two separate inverters ( like the A-165  ) are available that are very useful.
These can even be used to invert a signal before it is fed into one of the two logical units.
All other outputs can be fed back to the module's inputs also... in that way you can create very nice and very complex rhythmic triggers.

More on Logic Gates on Wikipedia
...and on Whatis.com




INPUTS - OUTPUTS
1   2   3    AND  OR   XOR  NAND  NOR  NEXOR
0   0   0       0      0       0        1        1          1
0   0   1       0      1       1        1        0          0
0   1   0       0      1       1        1        0          0
0   1   1       0      1       1        1        0          0
1   0   0       0      1       1        1        0          0
1   0   1       0      1       1        1        0          0
1   1   0       0      1       1        1        0          0
1   1   1       1      1       0        0        0          1