28123 Parallax Inc, 28123 Datasheet - Page 188

• 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

DEBUG ? value, CR
DEBUG "Change the index variable to a ", CR,
END
Example Program: DisplayDigitsWithLookup.bs2
This example program shows how the
storing the bit patterns used in the
which binary value is placed into the
0 to 9 again. The difference between this program and DisplayDigits.bs2 is that this
program is much more versatile. It is much quicker and easier to adjust for different
number sequences using lookup tables.
' What's a Microcontroller - DisplayDigitsWithLookup.bs2
' Use a lookup table to store and display digits with a 7-segment LED display.
'{$STAMP BS2}
'{$PBASIC 2.5}
index
OUTH = %00000000
DIRH = %11111111
DEBUG "index
FOR index = 0 TO 9
LOOKUP index, [ %11100111, %10000100, %11010011,
√
√
√
"different number(between 0 and 4).", CR, CR,
"Run the modified program and ", CR,
"check to see what number the", CR,
"LOOKUP command places in the", CR,
"value variable."
"-----
Enter and run DisplayDigitsWithLookup.bs2.
Verify that it does the same thing as the previous program (with much less
work).
Take a look at the Debug Terminal while the program runs. It shows how the
value of
value from the list into
OUTH
--------", CR
VAR
index
%11010110, %10110100, %01110110,
", CR,
Nib
is used by the
OUTH
OUTH
OUTH
.
LOOKUP
variable. Again, the
LOOKUP
variable. This example program counts from
command can come in really handy for
command to load the correct binary
index
is used to choose