LZX castle 110 Shift Register - DIY Modular video synth

What's a shift register?
"In digital circuits, a shift register is a cascade of flip flops, sharing the same clock, in which the output of each flip-flop is connected to the 'data' input of the next flip-flop in the chain, resulting in a circuit that shifts by one position the 'bit array' stored in it, 'shifting in' the data present at its input and 'shifting out' the last bit in the array, at each transition of the clock input." (wikipedia)

LZX describe this as a 4 position memory module (OR a 4-bit shift register).
The Shift register is like a 1 bit delay. Data goes in, and moves through the 4 positions based on the clock. D0, through to D3 are the output positions. Each position is one clock cycle delayed from the last.

 tHERE are 3 inputs: Clock, data and reset.

The main IC is a CMOS CD4015
For more on CMOS click here : CMOS

 The CD4015 consists of two identical, independent, 4-stage shift registers. Each register has independent CLOCK and RESET inputs as well as a single serial DATA input.

Only one of the shift registers is used so there might be scope to build a dual 110 module in the future.

Apart from the 4015, the only other major component to buy are the LM6172IN/NOPB.
You need 4 of these.

to be continued.... waiting for THOSE jacks.

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gOT tired of waiting for those jacks.

Shift register Patch 1

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LZX - Castle
Introduction
00_000 ADC - Analog to digital converter
01_001 DAC - Digital to Analog converter
02_010 Clock VCO
03_011 Shift Register
04_100 Multi Gate
05_101 Quad Gate
06_110 Counter
07_111 Flip flops

Links
+ LZX Shift register patch 1 
+ LZX Shift register patch 2
+ LZX industries
+ Vimeo - video
+ CMOS 
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