I have a desktop Monroe 1655 "calculator" that would also qualify then. I used
it in 1971 at high school. It was built by Monroe.
http://www.dvq.com/ads/monroe_sa_6_70.jpg
I picked one up on eBay a few years ago complete with a card reader, cards, spare bulbs,
etc (not shown in the picture).
The programming language had various conditional jumps, boolean functions, and would of
course do all the math you wanted. The jumps probably let you "jump" to a
specific program address. There wasn't much program space, but it was a great exposure
for me back then.
best regards, Steve Thatcher