A row of 16 toggle switches on the console typewriter could be individually tested from within programs, using the special Fortran statement IF ( SENSE SWITCH " i " ), for example.
12.
The only way to observe the state of the text during the editing process was to type in commands that would cause the text ( or portions thereof ) to be typed out on the console typewriter.
13.
Programs that utilized sense switches on the Century 100 architecture would simply halt with the humour line : " You find the switches, and I'll test them ! " displayed on the console typewriter.
14.
In the 1950s, modified standard versions of the A, B, and C models were used as console typewriters or terminals on many early computers ( e . g ., JOHNNIAC, IBM 1620, PDP-1 ).
15.
The console typewriter was a modified Model B1, which typed at only 10 characters per second . ( This typewriter had a very'nasty'habit of breaking off its " 0 " hammer and throwing it across the room in the middle of a long core dump .)
16.
There was a console typewriter for simple I / O . I am pretty sure there were a paper tape reader and punch, but I don't know width or format-maybe someone else can supply that, it would be interesting as a sidelight on how character sets developed.
17.
The earliest used text or similar interaction : the human player would enter moves numerically ( such as " 4 2 3 " for fourth level, second row, third column ) on a console typewriter or time-sharing terminal and the program would respond similarly, as graphics displays were uncommon.
