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cardiograph-computer/readme.md

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Cardiograph computers

The Cardiographs are a pair of imaginary computers, designed as educational toys.

Inspired by the CARDIAC paper computer, they are intended to be simple enough to build as hand-operated paper models.

Their design is guided by two additional criteria:

  1. They should be capable of producing interesting graphical output
  2. They should accurately model the functioning of a real computer (by operating on binary data, for example)

The two computers

The two Cardiograph computers are:

  1. the Cardiograph Mark I (CG) is a mainframe machine
  2. the Micro Cardiograph (µCG) is a microprocessor trainer (a miniaturized descendent of the mainframe)

They use the same instruction set and have very similar CPUs. (TODO: is that true?)

The main difference is in their peripheral hardware: the Mark I is designed for batch processing and supports punched-card input, while the MicroCardiograph is designed to be used interactively.

Simulator

Micro ElectroCardiograph (µECG) is a simulator for the Micro Cardiograph.

Documentation