IBM Convertible PC 5140

IBM 5140 Convertible PC
Manufacturer IBM
Processor type Intel 80C88
Cycle time 4.77 MHz
RAM memory 256 KB (up to 640 KB)
Ports Parallel interface, CGA video ouput, Serial port, Proprietary Snap-on Port, Expansion bus
Operating systems MS DOS 3.2
Keyboard 78-keys
Modem 300/1200 bps
Screen size 25 lines x 80 columns  LCD
Graphics resolution 640 х 200 dots
Dimensions 12 x 14,7 x 2,7 inches
Weight 12 pounds
Power External poxer supply 15V
Internal disk device 2 x 3.5″ floppy drives 720 KB
Peripherals Printer, external 5,25″ FDD
Price, $ (year) 1995 (1986)