The Texas Instruments Explorer is a family of Lisp Machine computers. These computers were sold by Texas Instruments in the 1980s. The Explorer is based on a design from Lisp Machines Incorporated, which is based on the MIT Lisp Machine. The Explorer was used for development and deployment of artificial-intelligence software
Notable is also the early use of the NuBus as the system bus for the Explorer computer family.
The Explorer was used for development and deployment of artificial-intelligence software. Later models were based on a special 32-bit microprocessor developed by Texas Instruments, which supported the execution of Lisp software in hardware.
The operating system of the Explorer was written in Lisp Machine Lisp and supported also Common Lisp.
A notable application is SPIKE, the scheduling system for the Hubble Space Telescope. SPIKE was developed on Texas Instruments Explorer workstations.
TI-15 Explorer is a calculator designed by Texas Instruments, intended for use in classes from grades 3-5. It is the successor to the TI-12 Math Explorer. For younger students, TI recommends the use of the TI-10. For older students, TI recommends the use of the TI-73 Explorer.
Features include a 2-line pixel display (as opposed to the 7-segment display of several other calculators), and a quiz-like "problem-solving" mode. It also supports limited scientific capabilities, such as parentheses, fixed decimal, fractions, pi, and exponents. It is recommended by Everyday Mathematics.
TI-73 series are graphing calculators made by Texas Instruments.
The original TI-73 was originally designed in 1998 as a replacement for the TI-80 for use at a middle school level (grades 6-9). Its primary advantage over the TI-80 is its 512 KB of flash memory, which holds the calculator's operating system and thereby allows the calculator to be upgraded. Other advantages over the TI-80 are the TI-73's standard sized screen (as opposed to the TI-80's smaller screen), the addition of a link port, 25 KB of RAM (as compared to the TI-80's 7 KB of RAM), and a faster 6 MHz Zilog Z80 processor (as compared with the TI-80's 980 kHz proprietary processor). The TI-73 also uses the standard 4 AAA batteries with a lithium backup battery (instead of the TI-80's 2 CR2032 lithium batteries).
In 2003, the TI-73 was redesigned with a sleek new body shape and redesignated the TI-73 Explorer to indicate its currently intended use as a bridge between the TI-15 Explorer and similar calculators and the TI-83 Plus, TI-84 Plus, and similar calculators.