DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-57 LCD
|Date of introduction:||1982||Display technology:||LCD|
|New price:||Display size:||8 + 2|
|Size:|| 5.8" x 3.1" x 0.90"
147 x 79 x 23 mm3
|Weight:||3.7 ounces, 106 grams||Serial No:||210035|
|Batteries:||2*LR44||Date of manufacture:||wk 21 year 1984|
|AC-Adapter:||Origin of manufacture:||Italy|
|Precision:||11||Integrated circuits:||CD4555, CD4572|
|Program steps:||48-0||Courtesy of:||Joerg Woerner|
(US-QR: 1.8 MByte)
(DE: 16.1 MByte)
TI-57 LCD is another member of the first generation slanted calculators started
with the TI-55-II. If you compare this one with its predecessor
notice some disadvantages in programmability. Overall memory was roughly reduced
The TI-57 LCD makes use of the two chip Master/Slave architecture introduced with the TI-55 II. Unbelievable that the original TI-57 demonstrated more performance with a single-chip microcontroller introduced 5 years earlier. Find more information about the TP0456 calculator chips here.
The limitation of the keyboard is known from the TI-55-II and was the reason of the soon replacement with the TI-57-II.
The colouring off the keyboard differs between Italian and US produced calculators. Compare this Italian design with the TI-57 LCD manufactured in US.
If you are interested in the calculating accuracy of scientific calculators don't miss the Calculator forensics.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.