Each module (Registers, ALU, memory, …) has multiple input bits that control the function of the module: Whether it loads data from the bus, outputs data to the bus, resets the module, which operation it should compute, etc. The name, abbreviation in the schematic and the description of each control bit is listed in the following table:

s stands for synchronous, a for asynchronous

Abbreviation	Name	s/a	Description
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