[theme : Hardware] [author : Gupta]
[theme : Hardware] [author : Suding]
[theme : Hardware] [author : King]
[theme : Speculation] [author : Buchanan]
[theme : Hardware] [author : Rice]
[theme : Voice Systems] [author : Atmar]
[theme : Hardware] [author : Hashizume]
[theme : Software] [author : Wadsworth]
[theme : Software] [author : Grappel-Hemenway]
[theme : Hardware] [author : Steeden]
What's good for about four billion bytes on line capacity, 10 to 50 ms access time, and a system cost in the personal computing category? Find out by reading Martin Buchanan's article on What Do You Do With a Video Disk?
"Friends, Humans, and Countryrobots. Lend Me Your Ears." When you've reached a point in your audio output micro-experimentation where the computer can talk, you'll have quite an accomplishment. D Lloyd Rice describes some of the background information needed to create a human vocal tract model with computer control in his excellent tutorial on the subject. Imagine, Star Trek implemented with a real ship's computer output!
What plugs into one Altair or IMSAI compatible bus slot, eats serial phoneme snacks, talks back and won't shut up till you pull the plug? Find out by reading Wirt Atmar's historical background and description of a new Altair compatible plug-in voice synthesizer, a commercial version of the prototype which was demonstrated as a prize winning entry in the recent MITS World Altair Computer Convention. Once you get the hang of its accent, your talking computer will add a new dimension to conversational software.
What's wrong with the 8080 processor architecture? Ask a programmer for "features" and you'll get some answers. An analysis followed by definition of improvements resulted in the new Zilog Z80 microprocessor which is the ultimate in 8 bit microprocessors at this point in time. Find out what the Z80 is all about by reading Burt Hashizume's Microprocessor Update: Zilog Z80.
The act of programming, like any act of creation, requires a bit of organization and discipline on the part of the thinker. In the second reprint from Nat Wadsworth's Machine Language Programming for the "8008" (and similar microcomputers) you'll find some thoughts on the design and planning of programs.
In May BYTE, we had A Date With KIM. Here is the next chapter in the continuing story of True Confessions: How I Relate to KIM. Turn to Yogesh M Gupta's account of modifications to the KIM-1 system which achieve compatibility with slower memories, bus expansion, and a priority interrupt capability.
A sub theme of this BYTE is the idea of the talking personal computer system. Well, Jack Hemenway and Robert Grappel got together recently to concoct an allegorical tale of Jack's assembler. In Jack and the Machine Talk you'll see a dialogue with a computer personified. Which leads to the next step: Who'll be the first reader to create a program to implement the computer side of the dialogue, using one of the new voice output devices which are coming to market?
Want to experiment with high level languages (like APL) that require an extended character set? Want to simply build and utilize a convenient text display output device? Need upper and lower case displays for a text editor? If so, and if you can get by with a 32 character line on a standard TV set or monitor, then Dr Robert Suding's latest article will be of interest. Build a TV Readout Device for Your Microprocessor using his detailed design.
What's an I2L? Terry Steed en has written a short background summary of this relatively new logic family, one which has important manufacturing and power consumption advantages which assure its place in the stable of semiconductor fabrication methods.
Many readers have found real bargains in older Baudot Teletype machines such as the Model 15 and the Model 19. The main problem, though, is Interfacing the 60 mA Current Loop to the normal TTL level signals of a typical microcomputer. One solution to this problem is provided by Walter S King's short article in this issue.
And for the cover, Robert Tinney portrays a scene from the near future.