IBM PC
IBM PS/2 type; 8525
AUG 1987 - IBM introduces the PS/2 Model 25, with an 8-MHz Intel 8086, combined system unit with monitor, no hard drive, and reduced-size keyboard, starting at US$1350. 
  • Model 8525
  • SN; 88-79853
  • Intel 8086 (16 bit)
  • Clock speed: 8 Mhz, zero wait states 
  • Socket for optional i8087 math coprocessor 
  • Type of BUS: 8-bit 
  • Total number of expansion slots: 2 
  • Ports: PS/2 keyboard, PS/2 mouse, serial, parallel, audio earphone connector 
  • RAM; Min/Max on system board: 512/640kb
  • RAM: DRAM (DIP and MMK) 100-150ns w. parity.
  • ROM: 40 or 64kb w. MS BASIC-80 
  • 3.5" half-height Floppy Disk Size: 3.5 inch half-height Capacity: 720KB 
  • Hard disk Size: 3.5 inch half-height 
    • Capacity: Optional 20MB 80ms or 20MB 38ms 
  • Display type: Size: 12 inch (diagonal) Integrated monochrome (models 001, C01) Graphics modes supported:
    • Integrated MCGA Display adapter.