28123 Parallax Inc, 28123 Datasheet - Page 108

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28123

• Style: Book
• Title: What's a Microcontroller?
• Contents: Whats a Microcontroller? Text
• Product: Microcontroller Accessories
• Core Processor: PIC16C57c
• Flash: 128 Bytes
• Operating Supply Voltage: 9 V
• Board Size: 31 mm x 16 mm
• Lead Free Status / RoHS Status: Not applicable / Not applicable

P15
P14
Snippets from the solution program are included below, but keep in mind
solutions may be coded a variety of different ways. However, most solutions
will include the following modifications:
Use two variables to keep track of two player's times.
timeCounterA VAR
timeCounterB VAR
Change instructions to reflect two pushbuttons:
DEBUG "Press and hold pushbuttons", CR,
DEBUG "buttons down again.", CR, CR
Wait for both buttons to be pressed before turning LED red, by using the
operator.
LOOP UNTIL (IN3 = 1) AND (IN4 = 1)
Wait for both buttons to be released to end timing, again using the
LOOP UNTIL (IN3 = 0) AND (IN4 = 0)
Add logic to decide which player's time is incremented.
IF (IN3 = 1) THEN
timeCounterA = timeCounterA + 1
ENDIF
IF (IN4 = 1) THEN
timeCounterB = timeCounterB + 1
ENDIF
Change time display to show times of both players.
DEBUG "Player A Time:
Add logic to show which player had the faster reaction time.
IF (timeCounterA < timeCounterB) THEN
470 Ω
DEBUG "Player B Time:
1
2
P4
Word
Word
", DEC timeCounterA, " ms. ", CR
220
Ω
", DEC timeCounterB, " ms. ", CR, CR
Vss
' Time score of player A
' Time score of player B
10
kΩ
Vdd
P3
220
Ω
AND
Vss
10
operator.
kΩ
AND
Vdd