Atanua is a real-time logic simulator designed for
educational use. It has an intuitive, OpenGL
accelerated user interface, with which the user can
place components and wires. Components include all
common logic blocks, including gates, latches and
flipflops. Additionally Atanua simulates about 30
different 74-series chips, as well as an 8051
microcontroller variant. Simulated and pure logic
parts can be mixed in the same circuit. On the I/O
front, Atanua includes several different frequency
clock inputs, constant level inputs as well as buttons
that are bound to the user's keyboard. LEDs in various
colors as well as 7-segment displays are also
included. There is also a simple logic probe for
debugging. The simulated parts are designed to
resemble their real-world counterparts, which is more
attractive for the students than pure schematics. The
students can practice lab experiments using the
simulated chips. The simulation shows the signal state
of each wire in real time. In addition to high and low
signal level, parts may output "invalid" signal,

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