Service bureaus (Was: Tek 4051 firmware listing

[Tony Duell]

> 
> I'm pretty sure the Micropad OCR gadget (circa 1980) that I once had required 
> slashing of the letter 'o', with the unslashed version interpreted as a zero.
> 
> (and to comment on another thread, I think the 286 Compaq luggable that I had 
> for a while had a dot in the middle of the zero rather than a slash - I'm not 
> sure if that was a standard feature or something oddball about my machine)

FWIW, I've just pulled a book off my bookshelf. 'Assembler Language 
Programmign, The IBM System/360 and 370', 2nd edition 1975.

It says  : 
'Note that the letter O (Oh) is written as 0 to distinguish it clearly 
from the digit O (sero). We follow this convention in the description of 
any statement or card that is fed to the computer'

So in that book (and presumably in other related manuals/documentation), 
the letter gets the slash.

-tony