Random Number Generator Overview
PLTW Engineering
Digital Electronics
Project 1.1.9 Soldering: Random Number Generator
1
Copyright 2021. Project Lead The Way, Inc.
Component Identification
Presentation topics:
Introduce the Board Game Counter
Review the theory of operation for the Board Game
Counter
Review all the parts that make up the Board Game
Counter
2
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Board Game Counter
3
Copyright 2021. Project Lead The Way, Inc.
Board Game Counter Block Diagram
0 0 0 1 1 1
Analog
Section
Sequential
Logic
Section
0 1 1 0 0 1
1 0 1 0 1 0
Combinational
Logic
Section
1 2 3 4 5 6
The Analog Section
produces a dampened
square wave that “rolls”
the count and slowly
stops
4
On every pulse of the
clock, the Sequential
Logic Section increments
a binary count from 1 to
6, then repeats
The Combinational
Logic Section
encodes the binary
count into the die’s
seven “dots”
Copyright 2021. Project Lead The Way, Inc.
Board Game Counter Sections
Combinational
Sequential
Analog
Logic
Section
Section
5
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Board Game Counter Parts
Components
Bare Printed Circuit Board
(PCB)
6
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Board Game Counter Components
Resistors
R1 – R7
180 
7
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Board Game Counter Components
Resistors
R8
1.2 K 
8
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Board Game Counter Components
Resistors
R9
10 K
9
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Board Game Counter Components
Resistors
R10
18 K
10
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Board Game Counter Components
Capacitor
C1
100 F
11
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Board Game Counter Components
Capacitor
C2
0.47 F
12
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Board Game Counter Components
Capacitor
C3
10000 pF
0.01 F
13
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Board Game Counter Components
Light Emitting
Diodes (LED)
L1-L7
14
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Board Game Counter Components
Push-Button
Switch
S1
15
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Board Game Counter Components
Slider-Switch
S2
16
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Board Game Counter Components
Integrated Circuits
(Dual Inline Packages)
U1 – U6
14 Pin DIP
8 Pin DIP
17
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Board Game Counter Components
Battery Holder
for 3 AA-Batteries
To Mount on the
Back of the PCB
18
Copyright 2021. Project Lead The Way, Inc.