CEA Centro de Estudios Administrativos

The first hard drive was made by IBM in 1956 and was called IBM Model 350 Disk File. The first-generation storage unit was huge, with a cabinet the size of a cupboard that held 50 24-inch disks and held an impressive 5MB of data.

The Holborn 9100 was a Dutch personal computer introduced in 1981 by Holborn, a small company founded in 1979 by Hans P***k and Dick Gerdzen. Designed by Studio Vos, the system stood out with its futuristic, organic appearance, combining a monitor, terminal, and keyboard in one unit, paired with an external box holding two 8-inch floppy drives and an optional hard disk. Two main versions existed: a larger multi-user system running the proprietary Holborn OS with light-pen support, and a smaller CP/M-based model without light-pen features. These were sold as the 9100, 7100, 6500, and 6100 series, with the 6100 becoming the most common.
Technically, the machines used a Zilog Z80A CPU at 4 MHz, 72 KB RAM (expandable to 220 KB), and up to 2.5 MB floppy storage. Holborn OS was ROM-based, menu-driven, and designed for ease of use.
Despite strong design and marketing efforts, the computers were extremely expensive—about 30,000 guilders ($10,000)—and quickly overshadowed by IBM’s growing dominance. Only about 200 units were sold before the company went bankrupt in 1983. Today, roughly 20 systems are believed to survive, admired mainly for their striking retro-futuristic design.

The Sharp MZ-80A is one of those charming early-80s machines that looks as if it could both run BASIC and survive a minor earthquake. Released in 1982, it quickly gained a cult following thanks to its clean, all-in-one design: built-in keyboard, crisp monochrome display, and a tape unit that whirred like an overcaffeinated hamster. Unlike many contemporaries, the MZ-80A famously booted into nothing—no BASIC, no OS. You had to load everything from tape, which made every computing session feel like a tense ritual: “Please load… please load… YES, it loaded!”
Despite its modest Z80A processor and limited memory, hobbyists adored it for its reliability, expandability, and surprisingly polished software ecosystem. Today the MZ-80A stands as a reminder of an era when computers demanded patience, rewarded curiosity, and looked gloriously industrial doing it.

🖥️ De los primeros cálculos al mundo digital: la evolución de la computadora 💾 Desde las enormes máquinas que ocupaban habitaciones enteras hasta los potentes dispositivos que hoy caben en la palma de la mano, la historia de la computadora es un viaje fascinante de innovación y creatividad. En los años 40, nacieron las primeras computadoras electrónicas como la ENIAC, capaces de realizar operaciones complejas que revolucionaron la ciencia y la ingeniería. Con el tiempo, la aparición del microprocesador en los 70 marcó un antes y un después, dando origen a las computadoras personales. La llegada de Internet en los 90 conectó al mundo, y hoy, con la inteligencia artificial y la computación cuántica, las máquinas no solo procesan datos: aprenden, crean y nos acompañan en cada aspecto de la vida. 💡 De herramienta de cálculo a compañera cotidiana, la computadora sigue transformando nuestra manera de trabajar, comunicarnos y soñar con el futuro. #Tecnología #Innovación #HistoriaDigital #Computadoras #EvoluciónTecnológica

Datapoint 3300 Advertisement, 1960's.