The dice game is made out of 35 transistors it has two speed levels the objective of the game is to select a number and then try and get the dice to stop on that number you can also use the dice to generate the number for a board game. The game runs on two AA batteries and draws about 20mA
The astable flip flop
The astable flip flop generates the clock frequency for the counter when the play button is pushed. The frequency for level one is 5 to 6Hz and for level two is 12Hz the high pulse width is about 4 to 6 ms. The level switch switches between a 470nf cap and a 220nf cap.
The counter receives the clock frequency from the astable flip flop and counts from 0 to 5 and is then reset.
The counter reset
The counter reset detects when the counter reaches six and then pulses the reset line.
The decoder inverters
The decoder inverter invert the signal coming out of the counter to drive the decoder
The decoder decodes the counter signals and displays the numbers
The steering diodes
The steering diodes are connected to the decoder outputs and then illuminates the required LEDs on the dice display
The number display
The display uses seven LEDs to display the numbers generated one to six just like a standard dice.