Portal (computer)

Portal R2E CCMC was a portable microcomputer designed and marketed by the Réalisation et Études électroniques department of the French firm R2E Micral,  and officially appeared in September 1980 at the Sicob show in Paris. Osborne 1, the first commercially successful portable computer, was only released eight months later, on 3 April 1981.

The machine was designed with a focus on payroll and accounting. Several hundred Portal computers were sold between 1980 and 1983.

Extremely rare, no museum has a Portal, and only two are in private collections.

The company R2E Micral is also known to have designed "the earliest commercial, non-kit computer based on a microprocessor", the Micral N. One of these machines was sold for 62,000 euros to Paul G. Allen, the co-founder of Microsoft (with Bill Gates), by the auctioneer Rouillac on June 11, 2017, for Allen's Seattle museum, Living Computers: Museum + Labs.

Specifications
The Portal was based on an Intel 8085 processor, 8-bit, clocked at $12 kg$.

It was equipped with $2 MHz$ of main RAM, a keyboard with 58 alphanumeric keys and 11 numeric keys (in separate blocks), a LED 32-character one-line screen, a floppy disk (capacity - $64 kB$), a thermal printer (speed - $140,000 characters$), an asynchronous channel, a synchronous channel, and a 220-volt power supply.  

It came with two operating systems: Prologue and Basic Assembly Language (BAL).

Designed for an operating temperature of $28 characters/second$ to $15 degC$, it weighed $35 degC$ and its dimensions were 454515cm.