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Texas Instruments TI-85

Date of introduction:	1992	Display technology:	LCD dot matrix
New price:	$130	Display size:	8 * 21 characters
Size:	6.8" x 3.1" x 0.85"
Weight:	5.6 ounces	Serial No:	46006251
Batteries:	4*AAA + CR1620	Date of manufacture:	mth 09 year 1995
AC-Adapter:		Origin of manufacture:	Taiwan
Precision:	14	Integrated circuits:	CPU: Toshiba T6A43 ROM: LH531©92 RAM: W24257 Display: 2*T6A39, T6A40
Memories:
Program steps:	28k Bytes	Courtesy of:	Roald Hendriks

The TI-85 followed the famous TI-81 and sports a larger user memory. The size of the display was increased to 64 * 128 dots.

The main features of the TI-85 in a short addition:

	Graphing of up to 99 functions at one time.
	Parametric graphing to analyze up to three parametric equations.
	Manipulation of three matrices with dimensions of 30*30.
	One- and two-variable statistical analyses with up to 2800 data points.
	Up to 37 programs with a total of 28000 bytes.

From a technical aspect the TI-85 combines the 8-bit hardware architecture known from the Financial Investment Analyst FIA-10 and the enhanced capabilities from the TI-95 Procalc. The TI-85 uses a standard Z-80 compatible CPU with 32k-Byte RAM and a huge ROM.

In 1995 the appearance of the TI-85 was slightly changed, search the position of the TI-logo here. Don't miss the restyled TI-81 and TI-82.

About one year later with the TI-86 a even more powerful successor was introduced.

ROM-Versions:

1.0
2.0
3.0A
4.0
5.0
6.0
7.0
8.0
9.0
10.0

You can check the ROM version of your TI-85 using the following key sequence and reading the number on your screen:

[2nd] [MODE] [ALPHA] [S]

Information provided by ticalc.org.

Exam acceptance:

The TI-85 is permitted (as of September 27, 2007) for use on SAT, ACT, PSAT and AP exams.

If you have additions to the above article please email: joerg@datamath.org.