The Busicom Colex 812-SL is a scientific calculator from 1975. It has a slim, brick-shaped plastic case measuring 77mm x 143mm x 17mm and weighs 172g including the internal rechargeable batteries. The calculator is powered by 4.8V from four N-sized 1.2V Matsushita batteries. It can be recharged using an adapter …
The Brother Procal 408AY is a handheld calculator from 1973. It has a matt beige and brown plastic case with a painted metal keyboard surround. The calculator measures about 100mm x 155mm x 45mm and weighs 242g without batteries. The 408AY features an 8 digit green vacuum fluorescent display (VFD), …
The Casio CQ-1 is an early attempt by Casio to combine a digital clock with a basic four-function calculator in one device. Released in 1975-1977, it has a horizontal two-piece dark brown plastic case measuring approximately 143mm x 65mm x 23-30mm and weighing 124g without batteries. The CQ-1 is powered …
The Casio Biolator H-801 is a vintage handheld calculator from 1975. It measures approximately 74mm x 125mm x 23mm and weighs 104g without batteries. Power comes from two AA batteries, though it can also run off an AC adapter plugged into a socket on the top left side. Battery life …
The Casio AL-8S is a handheld calculator from 1976. It measures 82mm x 140mm x 20mm and weighs 130g without batteries. The calculator is powered by two AA batteries or an optional AC adapter. The AL-8S has a slab-style plastic case in dark brown and white. The eight digit blue …
The Burroughs C3300 was an early desktop calculator released in 1970. Manufactured in Japan by Sharp Corporation for Burroughs Corporation in the United States, the C3300 featured advanced engineering and build quality for its time. The C3300 had a large footprint, measuring approximately 12.5 inches wide, 16.5 inches deep, and …
The Brother 827R is a handheld calculator from 1974. It measures about 78mm x 127mm x 17-22mm (width, height, depth) and weighs 150g without batteries. The case is two-piece smooth plastic in a cream color, with grip ridges on the sides for easy handling. A large red display filter wraps …
The Brother 408AZ is a handheld calculator from 1976. It measures approximately 85mm x 145mm x 20mm and weighs 132g without batteries. Power is supplied by 4 AA batteries or by an AC adapter that plugs into a socket on the top of the calculator. The case consists of two …
The Brother 408AD is a handheld calculator from the mid-1970s. It measures approximately 78mm x 142mm x 15-20mm (width, height, depth) and weighs around 120g without batteries. Power is supplied by two AA batteries or optionally by an AC adapter. The 408AD has a rectangular case made of matte black …
The Brother 202 is a handheld calculator from 1975 that demonstrates high build quality and thoughtful design. With dimensions of 88mm x 153mm x 33mm and a weight of 184g without batteries, it has a sturdy two-piece white plastic case with rounded edges. The neutral gray display filter provides good …
