The World of 8086: 640k ought to be enough for everyone.

Compaq Portable I Details

Compaq Portable I

The first commercially successful portable computer that helped establish the PC-compatible market

Download Experience Guide
COMPAQ MS-DOS Version 2.11 A: B: COMPAQ

About the Compaq Portable I

This 28-pound "luggable" computer featured a built-in 9-inch green monochrome monitor and ran MS-DOS, making it 100% IBM PC compatible. The Compaq Portable I was revolutionary in establishing the PC-compatible market and proving that companies other than IBM could create successful personal computers.

100% IBM PC compatible
Built-in 9-inch monochrome monitor
MS-DOS operating system

Key Features

Portable Design

Revolutionary "luggable" design at 28 pounds, making computing truly portable for the first time.

IBM Compatibility

100% IBM PC compatible, establishing the foundation for the PC-compatible market.

Historical Impact

First commercially successful portable computer that changed the computing industry forever.

Interactive Experience Guide

Step-by-step pamphlet for hands-on demonstration

Experience History Firsthand

Want to interact with this legendary machine? Download our exclusive Experience Guide—a carefully crafted pamphlet that walks you through using the Compaq Portable I just as users did in 1983.

Boot sequence and system startup
MS-DOS commands and navigation
Running classic software demonstrations
Historical context and insider tips
Download Experience Guide (PDF)

Historical Significance

A Revolutionary Beginning

Released in March 1983, the Compaq Portable I was the first product from Compaq Computer Corporation, a company founded just one year earlier in 1982. This groundbreaking machine became the first commercially successful IBM PC compatible computer, selling 53,000 units in its first year and generating $111 million in revenue—an unprecedented achievement for a startup.

The Compaq Portable's success proved that the IBM PC architecture could be legally cloned through clean-room reverse engineering, establishing the foundation for the entire PC-compatible industry that would dominate personal computing for decades to come.

Technical Innovation

  • Intel 8088 processor at 4.77 MHz
  • 128KB RAM (expandable to 640KB)
  • Two 5.25" floppy drives (360KB each)
  • Built-in 9" green monochrome CRT

Market Impact

  • First year revenue: $111 million
  • 53,000 units sold in first year
  • Launch price: $2,995 (over $9,000 today)
  • Fastest company to reach Fortune 500

The "Luggable" Revolution

While weighing 28 pounds and roughly the size of a portable sewing machine, the Compaq Portable I was revolutionary for its time. It featured a unique suitcase design with a removable keyboard that doubled as a protective cover during transport. The integrated 9-inch monitor, dual floppy drives, and optional battery pack made it truly self-contained.

This portability, combined with complete IBM compatibility, made it invaluable for business professionals, consultants, and traveling salespeople who needed to demonstrate software or access data on the go—a market segment that had never before existed.

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IndyClassic 2026

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