Library Reference

A Logisim library holds a set of tools that allow you to interact with a circuit via clicking and dragging the mouse in the canvas area. Most often, a tool is intended for adding components of a particular type into a circuit; but some of the most important tools, such as the Poke Tool ( ######### ) and the Select Tool (), allow you to interact with components in other ways.

Frequently, when the component is selected or added, Alt-0 to Alt-9 is used to change its Data Width attribute. Quick use of the keys allows the entry of larger values, for example: ALT-1 ALT-2 gives 12.

All of the tools included in Logisim's built-in libraries are documented in this reference material.

Wiring library

		Splitter
		Pin
		Probe
		Tunnel
		Pull Resistor
		Clock
		Power on Reset
		Constant
		Power/Ground
		Do not connect
		Transistor
		Transmission Gate
		Bit Extender

Gates library

IEC ANSI
		NOT Gate
		Buffer
		AND/OR/NAND/NOR Gate
		XOR/XNOR/Odd Parity/Even Parity Gate
		Controlled Buffer/Inverter
		Programmable logic array

Plexers library

		Multiplexer
		Demultiplexer
		Decoder
		Priority Encoder
		Bit Selector

Arithmetic library

		Adder
		Subtractor
		Multiplier
		Divider
		Negator
		Comparator
		Shifter
		Bit Adder
		Bit Finder
		Floating Point Adder
		Floating Point Substractor
		Floating Point Multiplier
		Floating Point Divider
		Floating Point Negator
		Floating Point Comparator
		Floating Point to Integer
		Integer to Floating Point