Speak and Spell (Texas Instruments, 1970s)
The Speak and Spell was an electronic hand-held child computer manufactured by Texas Instruments. It featured a TMC0280 linear predictive coding speech synthesizer, a keyboard and a receptor slot to receive one of a collection of ROM game library modules. First introduced in June 1978, the Speak and Spell was on the earliest handheld electronic devices with a visual display to use interchangeable game cartridges.
The Speak and Spell were educational toys that also included a Speak and Read and a Speak and Math. It was designed to help kids spell and pronounce over 200 commonly misspelled words. They were originally sold in the U.S., Canada, Australia, Europe and Japan.