IBM 5150 Hardware Reference Manual

Cassette Interface Connector Specifications
REAR PANEL
o
5 PIN DIN CONNECTOR
PIN SIGNAL ELECTRI CAL CHARACTE RISTICS*
1 Motor Control Common from Relay
2 Ground
3
Motor Control 6 VDC; lA (Relay N.O.)
4 Data In
500nA at ±13V - at 1,000 - 2,000 Baud
5
Data Out (Mic or Aux)
250 JiA at
} .68V
or **
75mv
* All voltages and currents are maximum ratings and should not be exceeded_
**Data out can be chosen using a jumper located on planar-
(AUX -+ _68V or MIC -+ 75 mV).
Interchange of these voltages on the cassette recorder could lead to damage
of recorder inputs.
2-21

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5