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.
ANITA: First desktop all electronic calculator. The first step was seen in 1961 with the arrival of ANITA (A New Inspiration To Arithmetic/Accounting). This was the world s first all-electronic desktop calculator and it was developed in Britain by Control Systems Ltd., marketed under its Bell Punch and Sumlock brands. ANITA used the same push button key layout as the company s mechanical comptometers, but these were the only moving parts.