28123 Parallax Inc, 28123 Datasheet - Page 194

• 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

SUMMARY
This chapter introduced the 7-segment LED display, and how to read a pin map. This
chapter also introduced some techniques for devices and circuits that have parallel inputs.
The
BASIC Stamp I/O pins P8 through P15. The
introduced as a means for referencing the lists of values used to display letters and
numbers.
Questions
Exercises
Project
Solutions
1. In a 7-segment LED display, what is the active ingredient that makes the display
2. What does common cathode mean? What do you think common anode means?
3. What is the group of wires that conduct signals to and from a parallel device
4. What are the names of the commands in this chapter that are used to handle lists
1. Write an
2. Write the values of
1. Spell “FISH CHIPS And dIP” over and over again with your 7-segment LED
Q1. The active ingredient is an LED.
Q2. Common cathode means that all the cathodes are connected together, i.e., they
Q3. A parallel bus.
Q4.
DIRH
readable when a microcontroller sends a high or low signal?
called?
of values?
Assuming all your I/O pins started as inputs, write the
cause the I/O pins to send high/low signals while leaving P14, P15 configured as
inputs.
display. Make each letter last for 400 ms.
share a common connection point. Common anode would mean that all the
anodes are connected together.
LOOKUP
and
OUTH
and
OUTH
LOOKDOWN
variables were introduced as a means of controlling the values of
command to set P8, P10, P12 high and P9, P11, P13 low.
OUTH
handle list of values.
required to make the letters: a, C, d, F, H, I, n, P, S.
LOOKUP
and
LOOKDOWN
DIRH
command that will
commands were