1 Key 1 to Key 2 is the first half step. 2  Key 2 to Key 3 is the second half step. 3  An accidental is a sign used to raise or lower the pitch of a note. 4  The first accidentals that we will discuss are the flat and the sharp. 5  The flat lowers a note by a half step while the sharp raises a note by a half step.
Ed Roberts, the president of MITS Incorporated, who designed and built the Altair. A supporting cast at Ziff Davis (publisher of Popular Electronics), and at MITS in Albuquerque, composed of Don Lancaster, Forrest Mims, and David Bunnell, who are well known in the personal computer industry, and a lot of people not so well known.
1 In 1961, Texas Instruments designed the first integrated circuit-based computer for the U.S. Air Force. 2  In 1967, the company invented and manufactured the first hand-held calculator.