Wolverine Adding Machine (1941)
In the 1930s and '40s, the closest that consumers could get to a mainstream commercial computer was a mechanical adding machine. Accordingly, Wolverine Supply Company of Pittsburgh created this early tin toy adding machine that could sum numbers up to 9999.
Photo: Computer History Museum
Edmund C. Berkeley Geniac (1955)
The Geniac kit shipped with a wooden frame and a set of six pre-drilled Masonite discs that served as rotary switches. The user programmed the computer by wiring the switches in a certain way, and then gave the computer input by positioning the discs. Assuming that the program was set up correctly, the user would see the result flash on a series of miniature light bulbs. Believe it or not, the Geniac could play an unbeatable game of Tic-Tac-Toe if wired correctly.
Photo: Edmund C Berkeley
E.S.R. Digi-Comp I (1963)
The Digi-Comp I was an entirely mechanical digital computer made from plastic parts that could perform Boolean logic operations on a three-digit binary number. And you could have it all for only $5 in 1963.
Users programmed the Digi-Comp to handle simple logical tasks such as addition and subtraction by positioning plastic cylinders at certain points on three plastic flip-flop platforms. Users would then manually slide a plastic plate in and out to perform operations, reading the results on the three-digit counter on the left side of the unit.
Photos: Minds-On Toys/E.S.R.
Science Fair Digital Computer Kit (1977)
In the mid-1970s, when using a home computer usually meant building and programming the machine yourself, an educational computer like the Science Fair Digital Computer Kit made sense. In the absence of any true electronic components, the user programmed the arcane kit by attaching wires to various spring posts and by flipping switches to form rudimentary digital logic gates.
When the user pushed a button on the console, electric current would flow through the wires in a way that would show a result on the row of lamps above. By following the included booklet, users could set up the kit to solve simple logic puzzles.
Photo: Radio Shack
Mattel Children's Discovery System (1981)
The Children's Discovery System was one of the first fully electronic computers aimed directly at kids. It loaded software from interchangeable ROM cartridges, and showed output on a fancy 16-by-48-pixel LCD screen. A total of 18 expansion cartridges were available on such traditional school topics as math, science, language and history. Each cartridge came with its own overlay that would fit over the Discovery System's keyboard to customise each experience.
Sears Talking Computron (1986)
The first half of the 1980s produced a number of simple toy computers, including the VTL Computron and the Sears Talkatron Learning Computer, both of which were marketed prominently through the annual Sears Wish Book catalogue.
Sears followed up on those units with the Sears Talking Computron which expanded on its predecessors' capabilities with additional built-in activities and better voice synthesis. The Talking Computron also ran software off of cartridge-based expansion modules, each sold separately.
More computers of the 1980s
The Connor ComputerSmarts (1987, upper left) worked in conjunction with videos on VHS tape to teach kids basics of math and spelling. The VTech Smart Start (1987, upper right) came with a printed activity booklet that taught much of the same information. The VTech Learning Window (1985, lower right) taught kids spelling and math through animations on what was for the time a graphically lush dot matrix LED screen. The VTech Type-right (1986, lower left) taught typing skills in conjunction with instruction from an audio tape.
VTech Precomputer 1000 (1988)
In 1988, VTech introduced what may have been the most popular learning computer of the 1980s and '90s. The Precomputer 1000 had a 20-character, one line LCD display that was flexible enough to run the system's built-in educational software, which included touch typing instruction, trivia games on subjects like history and science, math quizzes and word games. Most impressively, the machine included a fully functional version of the BASIC programming language (regrettably, you lost your programs when you turned off the unit).
Photos: VTech/Benj Edwards
VTech I.Q. Unlimited Computer (1989)
Like the PC 1000, the I.Q. Unlimited Computer shipped with a one line LCD, but you could attach it to a much more impressive display: a colour TV set. Once the I.Q. was hooked up to a TV or monitor, kids could do word processing, create spreadsheets and graphs, make databases, draw pictures or play built-in educational games. The I.Q. permitted users to save their work in the unit's battery-backed memory or on removable RAM cartridges. The I.Q. also offered BASIC programming and the ability to print documents through a standard printer port.
VTech Super Color Whiz (1994)
The VTech Precomputer Power Pad of the early 1990s was one of the first learning computers to be produced in laptop form. It included the now obligatory tiny (and thus inexpensive) LCD screen framed by an ocean of plastic on the laptop's lid.
The 1994 VTech Super Color Whiz took that design a step further by adding colour to the LCD display, a novelty for a kids' toy of that time. VTech and other companies experimented with a wide array of laptop-like kids' computers throughout the 1990s, rendering the "desktop" kids' computer design more or less extinct. Simultaneously, VTech began removing BASIC functionality from its toy computers and instead focused on using canned educational software to do the teaching.
Tiger Learning Computer (1997)
Just when VTech stopped including the BASIC programming language in its line of kids' computers, Tiger came along with a machine that was built around BASIC. Curiously, the Tiger Learning Computer contained hardware based on the famous Apple IIe computer of 1983, whose design Tiger licensed from Apple. The TLC booted to a custom graphical desktop screen that allowed the user to run software on six included cartridges. Software on the cartridges included an AppleWorks 4.3 word processor, some vintage Apple II educational titles that were commonly found in schools and a RAM cartridge for storing user-generated data.
LeapFrog ClickStart: My First Computer (2007)
In the decade following the Tiger Learning Computer, most kids' computers resembled the VTech Super Color Whiz, albeit with dozens of drastic variations in case design (usually involving licensing from Barbie or Disney properties), while getting cheaper and cheaper. Companies also created educational systems that worked as accessories for a generic Windows PC, and then moved toward kids' handheld game consoles and PDA-imitating toys, which mirrored changing technology.
In 2007, LeapFrog bucked those trends by introducing the ClickStart, an educational computer system that hearkens back to the old days by hooking up directly to a TV set. Still being produced and sold, the system includes a base unit and a wireless keyboard and mouse set through which a child can play both built-in and cartridge-based educational titles.
The Barbie-isation of kids' computers
Today you can find a large range of edutainment laptops in every shape and size, among them the ones shown here. The VTech Tote and Go Laptop is designed for the toddler set and teaches all the usual "ABC and 123" preschool topics.
Around the mid-2000s, manufacturers unwittingly entered a race to see who could create the pinkest most girly toy laptop ever. The Oregon Scientific Barbie B-Smart Laptop (2007, right) is a prime contender for the title.
Photos: VTech/Oregon Scientific
Kidz Delight Datamax ii (2009?)
As illustrated by the recent explosion in smartphones and tablet computers such as the iPad, computers aren't necessarily bulky devices with keyboards anymore. Manufacturers like Kidz Delight have followed that trend by catering to a new generation of children with keyboardless toy computer devices. The Datamax ii educates in much the same way as kids' computers from decades past, though with a much nicer LCD screen and a stylus input.
Photo: Kidz Delight