Geschichte der DV

Black Country Museums – Flickr

Bild: Black Country Museums

Original 1981 Crazy Kong Electronic Game

A small, hand-held, pocket arcade game with an LCD screen and six function buttons on the front, labelled Adjust, Date, Jump/Start, Attack/Lap Reset, Mode (Time/Stop W/Game) and Alarm. The body is cream plastic, with black around the screen and buttons, which are silver. It is a classic monster game where the player has to avoid Dracula, Swampy, Frankenstein, a mummy, and a knife-wielding skeleton.
Bild: Black Country Museums

Monroe High Speed Adding Calculator

Monroe Adding Calculator from Colorado. Motor attached on left side. Column zero buttons are in red. Left-right shift crank in front, Counter and sum reset crank on right. (High Speed is relative - multiplication takes a few seconds). There is a manual override knob on the right side (not pictured) for advancing or resetting in case it gets stuck mid-calculation. 1922-
Bild: egcd32

HP 35 Calculator

Finally! I've got my hands on an HP 35 calculator, the world's first pocket scientific calculator.
Bild: Twylo

Chadwick – Magic Brain Calculator

The Magic Brain Calculator was a device used many years ago (mabye 1950's) to solve maths problems. It requires you reset it to all zero's to begin with and after a bit of practise you can solve many types of mathematical calculations. Clearing the device is just a matter of pulling the metal bar at the top of the machine and pushing it back in. Calculations of up to 8 digits can be performed such as addition, subtraction and multiplication.
Bild: marsmet552