found 2 older model hand held computers Micro Flex PC1000+ and Corvallis MicroTech MC-V

[McFadden, Mike]

Micro Flex PC1000+ from Dap technologies looks like from 1987
Corvallis MicroTech MC-V with label saying 8088 CMOS system
 
Both are the size of large bricks and weight about the same, they have
nylon cases with Velcro closures.
 
One has a 15 pin connector that connects to the power wart.  The other
has two 9 pin serial connections.
I ended up with a pair of each of them.  
 
May have been used by the local water department to record data.  
 
There was a PC Kermit disk with one of them.
 
Companies still seem to exist, no information about these exact models
except that they were produced by them.
 
Mike