I've just seen that the article
Dimond, T. L. "Devices for Reading Handwritten Characters". Papers and Discussions. Presented at the December 9-13, 1957, Eastern Joint Computer Conference: Computers with Deadlines to Meet, ACM, 1958, 232-237
describes the first device that could capture handwriting while it was written.
What computer did Dimond use at that time?
What I found out
- AN/FSQ-7 Combat Direction Central:
- completed in 1955
- 60,000 vacuum tubes
- weighed 250 tons
- 0.2 ha
- cost $10 billion (in 1954; $87.82 billion in today's dollars)
- IBM 650 and eventually IBM 700/7000 series was available at that time
- IBM 704 was used by Bell labs in 1962
- 12,000 floating-point additions per second
- The 737 Magnetic Core Storage Unit had 4,096 36-bit words, the equivalent of 18,432 bytes and served as RAM.
So I guess the IBM 704 could be a good guess. Does anybody know more?