A diagram for a traffic light control

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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T
3-bit Counter
Traffic Unit
CLK
Figure 3. A diagram for a traffic light control
A transition table of the design is shown in Table 2.
Next state
Current state
T= 0
T = 1
000
100
100
100
100
110
110
110
001
001
001
010
010
010
100
АВС
A*B*C*
Table 2. A transition table for the timed traffic unit (with counter)
2.1 Based on the transition table in Table 2, for each flip-flop derive an input equation using a
Karnaugh Map.
2.2
build a 3-bit-counter. Add additional circuitry
to your counter so that it will generate a signal of T=1 when it has reached 7 (i.e. reached
8 seconds). Provide a screen short of your final counter circuit.
2.3 Join your design on the traffic control unit in Part 2.1 and your counter design in Part 2.2
to complete the timed traffic unit.
Please include Four screenshots of your working circuit, with each screenshot showing a
different light configuration.
Transcribed Image Text:T 3-bit Counter Traffic Unit CLK Figure 3. A diagram for a traffic light control A transition table of the design is shown in Table 2. Next state Current state T= 0 T = 1 000 100 100 100 100 110 110 110 001 001 001 010 010 010 100 АВС A*B*C* Table 2. A transition table for the timed traffic unit (with counter) 2.1 Based on the transition table in Table 2, for each flip-flop derive an input equation using a Karnaugh Map. 2.2 build a 3-bit-counter. Add additional circuitry to your counter so that it will generate a signal of T=1 when it has reached 7 (i.e. reached 8 seconds). Provide a screen short of your final counter circuit. 2.3 Join your design on the traffic control unit in Part 2.1 and your counter design in Part 2.2 to complete the timed traffic unit. Please include Four screenshots of your working circuit, with each screenshot showing a different light configuration.
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