MULTI T

1KB multifuntional fitnes tool : kilo and heartbeat counter and slave unit.

A 30 years old TMS7000 project measuring moved weigt per exersize and with cumulatieve result counter 
In between can you folow your heartbeat on the result/KG display 
If the user of the fitnes tool is a wheelchair user he can have a slave unit to folow up his exersizes

The software uses intensive the interupts of the microprocessor 
An almost real time clock is used to calculate the haertbeat from the time between haertbeats 
The kilos of the fitnesmachine is from a presurised cilinder. the presure can pumped up manualy and is measured bij a presure transduser 
For AD conversion is a dual (triple )slope converter used, initialized  bij te processor and measured by the interupt.
A serial interface is provided to send and recieve information from a slave unit.
the display and keyboard uses only a few io lines 
and the computer uses a tricky debounce system that delivers flawless key up and key down. and is going almost direct to the place to run.

The software is just on 6 pages , more to explain something.