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Hexadecimal (4 bit) switch and display

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Circuit Description

This applet shows the HexSwitch and HexDisplay simulation components.

Click into one of the '0', '1', ..., 'F' fields of the HexSwitch to generate the corresponding 4-bit value on the output ports of the switch. Click the '-' and '+' fields to decrement or increment the current output value of the HexSwitch. This simulation component is convenient to generate 4-bit inputs, and is used in many of the following applets.

If a bindkey is assigned to the hex switch (e.g. 'a'), you can also type the bindkey to increment the output value, or type the shift+bindkey combination (e.g. 'shift+a') to decrement the output value.

The HexDisplay converts its 4-bit input into the corresponding hexadecimal value and displays this on its seven-segment display. If any of the input values is undefined ('U', 'X', 'Z', 'W', 'D'), a cyan three-stripes pattern is displayed.

For reference, the Java class names of the hex switch and display are hades.models.io.HexSwitch and hades.models.io.HexDisplay. Also note that a HexSwitch will not work properly when you try to mirror (x/y) its symbol in the Hades editor.

Print version | Run this demo in the Hades editor (via Java WebStart)
Usage | FAQ | About | License | Feedback | Tutorial (PDF) | Referenzkarte (PDF, in German)
Impressum http://tams-www.informatik.uni-hamburg.de/applets/hades/webdemos/00-intro/05-switches/hexswitch.html