System Data Flow - IBM System/32 Introduction And Maintenance Manual

1.3.0 SYSTEM DATA FLOW
Processing
Unit
ALU Clocks,
Controls and
Registers
Channell
Port
Attachments
I
Channel, as used in this system, refers to the internal
interface between the processor and logic for control
of I/O function. The channel contains a port through
which part of this control passes.
Display
Key-
board
Printer 33FD
BSCA
or
SDLC
Modem
or
Data
Set
Other
Attach
ments
Other
liD
Devices
Introduction 1-3