IBM 7531 INDUSTRIAL COMPUTER

BRIEF DESCRIPTION OF ANNOUNCEMENT, CHARGES, AND AVAILABILITY

     The IBM 7531 Industrial Computer is designed for
information-handling applications in industrial plant floor
environments, where a system more resistant to harsh physical
conditions is required.  The 7531 is designed for floor-standing
operation.  It is based on a high-performance Intel 80286
microprocessor, and is equipped with a high-capacity (1.2Mb) diskette
drive, 512Kb of standard memory, keyboard, clock/calendar with
battery backup, ROM-based BASIC language, and other advanced
features.

OVERVIEW (Highlights, Description)

HIGHLIGHTS
STANDARD FEATURES
o   Advanced high-performance Intel 80286 microprocessor
o   ROM-based automatic power-on self-test of system components
o   ROM-based BASIC language interpreter
o   8086 compatible real address mode
o   Protected virtual address mode
o   512Kb of memory
o   1.2Mb high-capacity diskette drive
o   Combination fixed disk and diskette adapter
o   Fixed disk-in-use indicator light (yellow)
o   System clock/calendar/system configuration storage with battery
    backup
o   Sound system
o   System reset button
o   Diskette area cover door with security keylock
o   Bidirectional keyboard interface
o   Keyboard
o   Switchable worldwide power supply with cooling fan
o   Cooling fan with removable filter
o   Power-on indicator light (green)
o   Eight input/output (I/O) expansion slots with retainer bar to
    secure feature cards
o   Socket for Intel 80287 Math Co-processor
o   24-bit addressing
o   16-bit data path
o   Seven-channel direct memory access (DMA)
o   16-level interrupt
o   Three programmable timers

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