Texas Instruments PS-5400 Translator

Date of introduction:  1992 Display technology:  LCD dot matrix
New price:   Display size:  12 char 
Size:  2.8" x 4.5" x 0.55"
 70 x 114 x 14 mm3
Weight:  2.9 ounces, 81 grams Serial No:  1211598
Batteries:  2*CR2025 Date of manufacture:  mth 12 year 1992
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  10 Integrated circuits:  CPU: Toshiba TMP0211F
 ROM: IEC10503-03
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

PS-5400_BACK.jpg (298815 Byte)The PS-5400 Translator was introduced about two years after the first Pocket Translator PS-5600. Instead the foldable housing with a wide display line a housing similar to the early Databanks, e.g. the PS-2400 was used.

The internal memory stores over 5,000 words and 940 small sentences in 15 different categories. Each word is available in five different languages:  


By simply choosing a word or sentence in one of the five languages the other four languages can be displayed.

The PS-5400 integrated not only a Translator, but a calculator, a clock with alarm functions and even the world-time of 23 cities.

PS-5400_PCB.jpg (429107 Byte)The hardware of the PS-5600 uses an identical microcomputer to the one found in the TI-5128 desktop calculator but added a huge memory to store all the words and sentences. 

PS-5400_CPU.jpg (148539 Byte)The Toshiba TMP0211F single-chip microcomputer located in the PS-5400 is probably a 4-bit design similar to the TMP04xx family used in most calculator of that era.

PS-5400_ROM.jpg (72806 Byte)The IEC10503 ROM stores more than 5,000 words and 940 small sentences in five different languages. Think about 10 characters per word, 30 characters per sentence and 5 bits per character by 5 languages and you would need about 1,955,000 bits or 256k Byte. Pretty impressive in 1992!

The featured PS-5400 was manufactured in Taiwan by Inventec Corporation, production was later shifted to Malaysia.

A more powerful Translator was available with the PS-5800

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If you have additions to the above article please email:

Joerg Woerner, June 25, 2002. No reprints without written permission.