The machine multiplies two 8-bit signed integers together. One bit on each integer on the very left is used to say whether the integer is positive or negative, and the other 7 hold the value from 0 to 127. The inputs are interlaced to make it easier to use in dual-read memory registers. The red levers set the value for input A and the blue levers set the value for input B. The two very left levers set whether A and B are positive or negative. On means positive while off means negative.
The machine uses an adder with B shifted right and A shifted left to cycle through the digits of B in order to make the output, like how a sequential multiplier works. The machine runs on a clock for 8 pulsations until it finishes with a total time of about 14.3 seconds, which is consistent for any 2 numbers entered.
The machine is used by entering the two binary numbers with the red levers as input A and the blue levers as input B. Pressing the green button starts the calculation until it is done in about 14.3 seconds when the answer will be shown in the back by 8 lamps. The leftmost lamp signifies whether the answer is positive or negative with on meaning positive and off meaning negative.
Comments
Tiny Tiny Correction
The time was actually 14.04 seconds, not 14.3
:D
:D
I like it
is it for builder?