The Boots 224 Memory is a slim, handheld calculator from 1978. Made in Japan for the Boots brand, it was actually manufactured by Casio. This becomes obvious when looking at the design, which resembles Casio’s own Memory B-1 model. The 224 Memory measures about 77mm wide, 136mm tall, and 20mm …
The Bohn Omnitrex was an early compact calculator released in 1973 by the Bohn Rex Rotary company. It retailed for $100, which was quite expensive at the time. The Omnitrex measures 68mm x 127mm x 17-22mm and weighs 272g without batteries. It is powered by five AA batteries or can …
The Binatone is a basic handheld calculator from 1975. This one is model # 02-4252. It measures approximately 80mm x 145mm x 28mm and weighs 154g without batteries. The calculator is powered by 4 AA batteries or can use an AC adapter connected through a socket on the top side. …
The Atlas R100 is a handheld calculator from the late 1970s. Manufactured by the German company MBO, it has a sleek, wedge-shaped case made of dark brown plastic. The front is dominated by a metal surround wrapping around the edges, with an oversized green plastic display filter slightly protruding over …
The Aristo M66S is a handheld calculator from 1977 made by the German company Dennert & Pape AG. It measures 78.0mm x 151mm x 20.5mm and weighs 150g without batteries. The case is made of glossy and matte white plastic on the bottom with a matte black plastic front section. …
The Aristo M65 is a handheld calculator from the mid-1970s manufactured by the German company Aristo, known for its slide rules. With its sturdy construction and bright red LED display, the M65 exemplified the build quality and innovation of 1970s electronics. The M65 measures about 6.2 x 15 x 2 …
The APF Mark 42 is an LED calculator from the late 1970s. With its compact size and bright red display, it exemplified the LED calculator era before LCD displays took over in the 1980s. The Mark 42 measures just 67 x 126.5 x 27.1 mm and weighs only 70g without …
In the mid-1970s, electronic calculators were becoming smaller, more affordable, and gaining widespread popularity beyond scientific and business settings. The APF Mark 40 was one such model aimed at the growing consumer market. Manufactured in 1975 by APF Electronics in New York and made in Japan, this handy calculator measured …
The Anita 810 was an advanced handheld calculator released in the early 1970s by the Sumlock Comptometer company in the United Kingdom. With its sleek and modern design, the Anita 810 stood out among the bulky calculators of its time. At around 70mm x 120mm x 23mm, the Anita 810 …
The American M-26 was an inexpensive LED calculator that hit the market around 1975-1976. With its all-plastic case and limited functionality, it exemplified the low-end calculators that became widely available to consumers in the mid-1970s. The M-26 had a compact but chunky profile, measuring approximately 63mm x 115mm x 30mm …
