Toshiba T1100
In April 1985, Toshiba revolutionized personal computing with the T1100. For the first time, a laptop computer offered complete compatibility with the IBM PC. This 4 kg machine marked the birth of modern mobile computing.
The era seemed hardly conducive to such innovation. Personal computers, the Apple II since 1977 and the IBM PC since 1981, remained confined to desktops. A few manufacturers did attempt to create transportable machines: Compaq's Portable I weighed 12.5 kg in 1982, while Seiko released its 1.6 kg HX-20/HC-20 the same year, followed by NEC's PC8201A in 1983. But these attempts faced a technical dilemma: either maximize miniaturization with incompatible proprietary architectures, or aim for IBM PC compatibility while accepting bulk and limitations.
Toshiba's teams refused this compromise. Their motto "anywhere, anytime, anyone" expressed a clear ambition: to transform the desktop computer into a mobile companion. The company theorized this approach as a "revolution on the desk," a shift from machine-centered computing toward human-centered use. Three objectives guided development: abandoning closed architectures, making the computer truly portable, and enabling the use of standard software without specific programming.
The technical achievement was an engineering marvel. CMOS integrated circuits replaced power-hungry NMOS technology. Where the IBM PC required nearly 100 circuits for display, the T1100 made do with five. This radical optimization produced a compact device with unprecedented battery life. Energy was a field of innovation. Toshiba created from scratch a charge-discharge system and power management software. These developments would lay the groundwork for the resume function introduced in 1989 on the J3100SS001 model, then the ACPI standard developed with Microsoft and Intel.
The high-contrast LCD screen, mounted on a tilting stand, resulted from extensive studies on visual ergonomics. But the real commercial challenge emerged elsewhere: the choice of 3.5-inch floppy disks. While the IBM PC operated with 5.25-inch format, Toshiba bet on the compact format. Only publishers were reluctant to distribute their software on this still-marginal medium, despite the work of commercial teams who conducted an intensive persuasion campaign to convince them to adopt 3.5-inch.
The marketing strategy broke with industry habits. No more technical arguments! Toshiba concretely demonstrated how to work mobile with the same software as at the fixed office. This pragmatic approach won over non-technical professionals and considerably expanded the market.
Commercial success confirmed this intuition. A study revealed two distinct expectations: portability on one side, more power and capacity on the other. Toshiba responded in January 1986 with two new models. The T2100 featured an i8086 processor and two 3.5-inch drives. The T3100 moved upmarket with an i80286 and a 10-megabyte hard drive. These machines required mains power, but PC Week validated this choice by recognizing the existence of a market for plugged-in laptops. Byte magazine called the T3100 the "King of Laptops." In 1987, Toshiba reached approximately 40% market share of the 130,000 laptops sold in Europe.
The economic impact exceeded all predictions. In 2008, the market for LCD screens under 17 inches represented $15 billion. That of 2.5-inch and smaller hard drives reached $19 billion. Lithium-ion batteries for mobile equipment generated $12 billion in revenue. A year later, laptop sales surpassed desktop machines in a market estimated at $150 billion.
The T1100 demonstrated that a user-centered approach transforms technology sectors. By prioritizing software compatibility, portability, and simplicity over raw performance, Toshiba took the computer out of IT departments and placed it in executives' briefcases. This democratization of mobile computing heralded the current ubiquity of portable devices in our lives.