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Electronic
Scoring Game
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You
can play this game alone or with your friends. The circuit
comprises a timer IC, two decade counters and a display
driver along with a 7-segment display. The game is simple.
As stated above, it is a scoring game and the competitor
who scores 100 points rapidly (in short steps) is the
winner. For scoring, one has the option of pressing either
switch S2 or S3. Switch S2, when pressed, makes the counter
count in the forward direction, while switch S3 helps
to count downwards. Before starting a fresh game, and
for that matter even a fresh move, you must press switch
S1 to reset the circuit. Thereafter, press any of the
two switches, i.e. S2 or S3. On pressing switch S2 or
S3, the counter’s BCD outputs change very rapidly and
when you release the switch, the last number remains latched
at the output of IC2. The latched BCD number is input
to BCD to 7-segment decoder/driver IC3 which drives a
common-anode display DIS1. However, you can read this
number only when you press switch S4. The sequence of
operations for playing the game between, say two players
‘X’ and ‘Y’, is summarised below:
1. Player ‘X’ starts by momentary pressing of reset switch
S1 followed by pressing and releasing of either switch
S2 or S3. Thereafter he presses switch S4 to read the
display (score) and notes down this number (say X1) manually.
2. Player ‘Y’ also starts by momentary pressing of switch
S1 followed by pressing of switch S2 or S3 and then notes
down his score (say Y1), after pressing switch S4, exactly
in the same fashion as done by the first player.
3. Player ‘X’ again presses switch S1 and repeats the
steps shown in step 1 above and notes down his new score
(say, X2). He adds up this score to his previous score.
The same procedure is repeated by player ‘Y’ in his turn.
4. The game carries on until the score attained by one
of the two players totals up to or exceeds 100, to be
declared as the winner.
Several players can participate in this game, with each
getting a chance to score during his own turn. The assembly
can be done using a multipurpose board. Fix the display
(LEDs and 7-segment display) on top of the cabinet along
with the three switches. The supply voltage for the circuit
is 5V. |
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