contrast control ,
brightness control
RAM card cover
external keypad connector
I
Main Unit
CPU
386SX microprocessor; 8 MHz or 16 MHz clock speed, selectable
through SETUP or software command (CV!-All-0
Main memory
1MB (640KB
either shadow RAM or extended memory, selectable through
SETUP)
Math coprocessor
Socket for optional 16-MHz, 387SX coprocessor
Clock/calendar
Real-time clock and calendar with battery backup
Interfaces
Parallel / External diskette drive
25-pin, D-type, female connector; standard B-bit parallel or external
diskette drive support, selectable through SETUP
Serial
RS-232C, programmable, asynchronous, 9-pin, D-type male
connector
Video
15-pin, female connector; supports
Speaker
Internal
Memory
Internal RAM card slot: allows expansion to 2MB or 5MB
Modem
lnternal slot for optional modem
Notebook Computers
LCD screen
ard disk drive
indicator
status
diskette drive
the remaining 384KB can be used as
conventional;
VGA
monitor
battery charging indicator
parallel/external diskette drive port
bar
11/30/90
EPSON NB3s
external monitor port
NB3s-1