Hi,
This project is the complete design documentation for a large digit debt
counter. It was commissioned for the Students association at Canterbury
University, Christchurch, New Zealand. It is 8 foot long with 12 digits, each a
foot high, and it counts up the debt that the students have. It is still
working beautifully to this day.
There are several interesting things about the PIC 16F876 micro code in Hi-Tech
C:
1. Example of serial comms, plus supporting Visual Basic v5 and v6 project.
2. Example of delay routines, maths routines, etc.
3. Multitasking system. Its keeping a record of the count in the background,
while checking the serial lines for comms, updating the display using the shift
registers, doing PWM to control the brightness, etc. The system allows multiple
tasks to be run based on a timer tick. Each task executes at a selected
frequency, and priority. Large tasks can be run in the background, triggered
from the interrupt.
The counter is still working beautifully to this day - the design is complete,
but I take no responsibility for the lack of documentation or clarity in this
project.
The techniques used for the PIC side of the project are explained in detail in
the Hi-Tech C FAQ, http://www.workingtex.com/htpic
Cheers,
Shane
Designed by Shane Tolmie. Freely distributable.
Questions and comments to the email address at www.microchipC.com
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debt_counter_plans.zip_LCD_PIC LCD counter
共6个文件
zip:4个
txt:2个
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2022-09-14
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基于PIC的LCD显示的完全设计实例,对PIC工程师会很有用。这个设计是新西兰的Canterbury University的学生搞的,在学校里显示学生欠款的数额,挺有意思的。
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debt_counter_plans.zip (6个子文件)
debt pcb v13.zip 381KB
debt counter photos.zip 693KB
www.pudn.com.txt 218B
debt pic hitech c code v23.zip 16KB
debt visual basic v23.zip 21KB
readme.txt 1KB
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