DATAMATH CALCULATOR MUSEUM

Texas Instruments TI Programmer

Date of introduction:	August, 1977	Display technology:	LED-stick
New price:	$42.50, DM198.00	Display size:	8 (5 + 2)
Size:	5.8" x 3.2" x 1.4"
Weight:	6.2 ounces	Serial No:	35375
Batteries:	BP8	Date of manufacture:	wk 38 year 1978
AC-Adapter:	AC9132	Origin of manufacture:	USA
Precision:		Integrated circuits:	TMC0983
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner
		Download manual:	(US: 2.705 kB)

The TI Programmer is a very unusual calculator doing math not only on the base-10 system like our natural life but on base-8 and base-16, too. Long before SW-engineeres got nice languages like JAVA or C++ they were used to program the microcontrollers in their native assembler languages. The only things such a microcontroller is executing are simple instructions to manipulate data. With the TI Programmer you could simulate these operations, e.g. AND, OR, XOR and SHIFT's in the dataformat of modern microcontrollers (hex or base-16) or oldfashioned minicomputers (octal or base-8).

From the technical aspects the TI Programmer is nothing else than a TI-30 with a different calculator chip (TMC0983/ZA0675 instead the TMC0981).

Simply by comparing the designation of the integrated circuits of the entry line "Majestic" calculators, you'll get the all members of this family:

	TMC0980 Goulds Pumpulator uses a custom design ROM (CD9801)
	TMC0981 TI-30 and SR-40
	TMC0982 Business Analyst and TI-41
	TMC0983 Programmer
	TMC0984 TI-33

Digging deeper into the TMC098x calculator chips you'll locate an OEM-chip used on a TI-30 "clone" manufactured in Hong Kong:

TMC0985 Amelia Scientific 2001

The TI Programmer wasn't the first calculator from Texas Instruments dealing with hexadecimal numbers, view the odd SR-22.

The TI Programmer was replaced in 1982 with the LCD Programmer based on the luckless TI-55-II.

George Boole

Mathematician and logistician who developed ways of expressing logical processes using algebraic symbols, creating a branch of mathematics known as symbolic logic.

Born in Lincoln, England on November 2, 1815, George Boole was the son of a poor shoemaker. As a child, Boole was educated at a National Society primary school. He received very little formal education, but was determined to become self-educated.

When he was merely sixteen, Boole became an assistant teacher at an elementary school, and he founded his own school four years later. When Boole opened his school, he also began seriously studying mathematics. His desire to pursue math was inspired in part by his frustration at using inferior math texts to educate his pupils. This frustration led Boole to forever alter the world of numbers.

By 1840, only five years after he began studying math, Boole was creating original work. In 1844, a paper he wrote on the calculus of operators was given a gold medal by the Royal Society. This honor secured recognition for Boole from British mathematicians. His reputation was greatly enhanced in 1847 when he published The Mathematical Analysis of Logic, a short volume that first introduced Boole's early ideas on symbolic logic to the world. The publication demonstrated that logic, as presented and verbalized by Aristotle, could be rendered as algebraic equations. As expressed by Boole, "We ought no longer to associate Logic and Metaphysics, but Logic and Mathematics." Indeed, numbers may be the truest representation of logic known to humanity.

1849 marked a significant change in Boole's life, when he was appointed professor of mathematics at Queen's College in Cork, Ireland. He became chair of mathematics, and taught at the school the rest of his life. The school later became known as University College Cork.

In 1854, Boole published An Investigation of the Laws of Thought, on Which Are Founded the Mathematical Theories of Logic and Probabilities. This work expounds upon his earlier work, and contains the concepts which have come to be known collectively as Boolean algebra. He was named a fellow of the Royal Society in 1857, and Boole's 1860 publication on the calculus of finite differences has become a seminal work in that field.

Boole married Mary Everest in 1855, and they had five daughters together before his death from pneumonia on December 8, 1864. In 1847, George Boole observed that the importance of his work would vary, determined primarily by the fields in which his theories found application. Today, Boole's texts on symbolic logic are used extensively not only in the teaching of mathematics, but also in information theory, switching theory, graph theory, computer science, and artificial intelligence research.

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