[theme : Systems] [author : Hemenway]
[theme : Hardware] [author : Lancaster]
[theme : Hardware] [author : Mauch]
[theme : Software] [author : Helmers]
[theme : Hardware] [author : Schulein]
[theme : Hardware] [author : Manly]
[theme : Hardware] [author : Baker]
[theme : Software] [author : Maurer]
[theme : Systems] [author : Walters]
One result of the BYTE Audio Cassette Symposium last November was a provisional standard for audio recording, essentially identical to that described by Don Lancaster in issue No. 1 of BYTE last September. In this issue, Don presents an updated design and describes how to Build The Bit Boffer. Then, to show that there's more than one way to spin a tape, Harold Mauch gives some details of a second system compatible with the standard in his article Digital Data on Cassette Recorders.
Jack Hemenway uses Don Lancaster's Bit Boffer desi gn to wire up The COMPLEAT Tape Cassette Interface using an ACIA attached to his 6800. But completeness requires more than hardware, so Jack provides software of six subroutines for the control and transfer of data with this interface.
Creating programs can be done with a variety of tools. The best way is to use an interactive terminal with "mass storage available and a good high level language. But, when you move up country or have other reasons to be away from convenient access to monster machines, at first things have to be done the hard way using a new home brew machine. This makes the techniques of Assembling Programs by Hand invaluable for your bag of tricks.
In the previous issue, information on joysticks and slide pots was presented. In this issue, John Schulein supplies a short note on another Pot Position Digitizing Idea.
It is one thing to tell how to do something, but why it works is often a separate topic. William A Manly provides answers to a lot of the "whys" of magnetic mass storage in h is article on the physics of Magnetic Recording for Computers.
One of the newer microprocessor designs is the General Instrument CP1600. In his Microprocessor Update, Bob Baker summarizes the technical information about this chip design.
Last month, Prof W Douglas Maurer described some salient points about processing algebraic expressions. In this issue, he continues the discussion with Part 2 of Processing Algebraic Expressions. This includes a simplified explanation of what it means to generate code as in a compiler.
Peek inside a video display terminal with Don Walters' quick summary of What's in a Video Display Terminal.
And to round out the theme of magnetic recording technology, the cover shows a typical Philips style audio cartridge.