IBM 1 Series Manual page 192

transfer
byte
input 2-8
output 2-8
word
input 2-8
output 2-8
transistor-transistor logic (TTL) 1-3
capacitance loading 2-61
DPC adapter feature 6-1
output specifications 6-11
recommended input driver 6-22
input specifications (timer feature) 3-10
teletypewriter adapter feature
cabie connections 4-31
data transfer 4-4
input circuits 4-23
input options 4-1
output circuits 4-23
output options 4-1
receiver inputs 4-26
rise time 4-28
unit load current (processor I/O channel) 2-59
voltage-level interface 4-6, 4-10
transmit operations 4-16
transmitted character frame, format 4-11
TTL (see transistor-transistor logic)
TTY (see teletypewriter adapter feature)
unit load, processor I/O channel
characteristics 2-55
driver/receiver
classification 2-58
specification 2-59
types 2-56
equivalences 2-64
voltage
levels and switching characteristics 2-61
pin assignments 2-66
sequencing, logic 2-66
tolerances, circuit module 2-65
wiring practices, timer feature 3-12
Index
X-7