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As the first electronic educational toy, [6] [7] the Little Professor is a common item on calculator collectors' lists. [8] In 1976, the Little Professor cost less than $20. More than 1 million units sold in 1977. [9]
The Irma Lerma Rangel Young Women's Leadership School is a school for girls in Dallas, Texas.Part of the Dallas Independent School District, it is the first public all-girls school in the state and is renowned for its challenging coursework and high college matriculation rate.
By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable calculator. It could add ...
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
The Learning Company (TLC) was an American educational software company founded in 1980 in Palo Alto, California and headquartered in Fremont, California.The company produced a grade-based line of learning software, edutainment games, and productivity tools.
Irma Lerma Rangel (May 15, 1931 – March 18, 2003) was an attorney and Democratic state legislator based in Kingsville, Texas.She was the first Mexican-American woman elected to serve in the Texas House of Representatives and the first Mexican-American female attorney in Kingsville.
The Marine Corps Individual Reserve Support Activity (MCIRSA) is a subordinate unit within Marine Forces Reserve (MARFORRES) that provides support for all Individual Ready Reserve (IRR), Individual Mobilization Augmentee (IMA) and Mobilized Training Unit Marine reservists.
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [2] and completed in 1694). [1]