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add photo of the prototype 74LS595 build

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Tom Nisbet 2021-05-27 10:17:14 -04:00
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docs/hardware.md
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@ -34,7 +34,8 @@ A<sub>16</sub>..A<sub>18</sub>
## 74LS595 Shift Registers ## 74LS595 Shift Registers
When using the 74LS595 instead of the 74LS164, there is an additional output latch that When using the [74LS595](images/TommyPROM-595.jpg) instead of the 74LS164, there is
an additional output latch that
is pulsed to put the contents of the shift register on the output lines. The code is pulsed to put the contents of the shift register on the output lines. The code
supports the 164s or the 595s by default. No code changes are needed to use either supports the 164s or the 595s by default. No code changes are needed to use either
version of the shift register hardware. version of the shift register hardware.

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