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 …
The American 1776 is a simple six-digit calculator from the mid-1970s. This calculator was marketed as being “Made in the USA”, with its patriotic name and branding. However, it was likely manufactured by Fantasia Calculator Corp. based in New Jersey. In terms of design, the American 1776 has a compact …
The Alltronic 808 is a simple four-function calculator from the mid-1970s. Manufactured in Singapore, likely by a contract electronics company, the Alltronic 808 exemplifies the transition from discrete transistor logic to integrated circuits in consumer electronics. The Alltronic 808 measures 76 x 137 x 22mm and weighs 92g without batteries. …
In the mid-1970s, calculators became more affordable and widely used by students and professionals. Companies raced to produce handheld calculators with basic functions at low costs. One such model was the Alcor 888 introduced in 1975 by Alco Marketing. Design The Alcor 888 featured a simple slab-shaped plastic case typical …
In the early 1970s, the emergence of LED display technology enabled the creation of the first handheld electronic calculators. Companies raced to develop and market these novel devices to consumers and businesses. One such calculator was the Ajax 2500, released around 1974-1975 by the British company Acme Electric. With its …
