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n°1 september 1975

Foreground

p.20 RECYCLING USED ICs

[theme Hardware] [author Mikkelsen]

p.62 DECIPHERING MYSTERY KEYBOARDS

[theme Hardware] [author Heltners]

p.72 LIFE Line

[theme Applications] [author Heltners]

Background

p.10 WHICH MICROPROCESSOR FOR YOU ?

[theme Hardware] [author Chamberlin]

p.16 RGS 008A MICROCOMPUTER KIT

[theme Review] [author Hogenson]

p.22 SERIAL INTERFACE

[theme Hardware] [author Lancaster]

p.44 WRYTE for BYTE

[theme For Profit] [author Ryland]

p.50 WRITE YOUR OWN ASSEMBLER

[theme Software] [author Fylstra]

Nucleus

p.4 What is BYTE ?

p.9 How BYTE Started

p.40 Clubs - Newsletters

p.84 Book Reviews

p.87 Letters

p.90 Byter's Digest

p.96 Reader's Service

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n°2 october 1975

Foreground

p.14 ADD A KLUGE HARP TO YOUR COMPUTER

[theme Fun and Games] [author Carl Helmers]

p.34 LIFE Line 2

[theme Software] [author Carl Helmers]

p.43 A QUICK TEST OF KEYBOARDS

[theme Hardware] [author Walters]

p.52 ADD A STACK TO YOUR 8008

[theme Hardware] [author Chamberlin]

p.64 A NOVAL ASSEMBLER FOR THE 8008

[theme Software] [author Peter Helmers]

p.68 ASYNCHRONITIS

[theme Hardware] [author Bancroft]

p.70 BUILD A GRAPHICS INTERFACE

[theme Hardware] [author Hogenson]

Background

p.20 TELEVISION INTERFACE

[theme Hardware] [author Lancaster]

p.46 MODULAR CONSTRUCTION

[theme Hardware] [author Walters]

p.58 BUCK ROGERS AND THE HOME COMPUTER

[theme Speculation] [author Gardner]

Nucleus

p.5 Speaking of Computers

p.8 Letters

p.12 Clubs and Newsletters

p.61 A Word From the Publisher

p.82 Book Reviews

p.84 Bits and Pieces

p.96 Reader's Service

p.96 The BYTE Questionnaire

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n°3 november 1975

Foreground

p.12 INS AND OUTS OF VOLATILE MEMORIES

[theme Hardware] [author Lancaster]

p.20 COMPUTERS ARE RIDICULOUSLY SIMPLE

[theme Principles of Operation] [author Wadsworth]

p.42 COMPUTERS AND AMATEUR RADIO

[theme Applications] [author Gipe]

p.56 SON OF MOTOROLA (OR, THE S20 CPU CHIP)

[theme Chip Designs] [author Fylstra]

Background

p.36 HEXPAWN - PROJECT IN ARTIFICIAL INTELLIGENCE

[theme Software] [author Wier]

p.52 NOTES ON PARALLEL OUTPUT INTERFACES

[theme Hardware] [author Carl Helmers]

p.64 MONITOR 8½, - YOUR OWN PSEUDO INSTRUCTIONS

[theme Software] [author Nico]

p.66 VERSATILE READ ONLY MEMORY PROGRAMMER

[theme Hardware] [author Peter Helmers]

Nucleus

p.5, 82 From the Publisher

p.6, 90 Speaking of Computers

p.11 Book Reviews

p.46, 72, 79 Byter's Digest

p.77 Clubs and Newsletters

p.78 Diagnostics

p.84 Letters

p.88 BOMB

p.96 Reader's Service

Contract:

The subscriber or purchaser of this magazine agrees to the following software conditions ... not to resell this magazine for less than 50% of the cover price ... not to give the magazine away at any time in the future... or to lend it ... or rent it or in any other way permit anyone to become privy to the material published within these pages. Purchaser agrees to display this copy of BYTE to as many computer addictees as possible, but to limit their perusal to the cover and table of contents pages. This agreement holds not only for casual acquaintances, but also for personal friends, blood relatives, and even wives.

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n°4 december 1975

Foreground

p.26 POWERLESS IC TEST CLIP

[theme Test Equipment] [author Baker] [contributor Errico]

p.48 LIFE Line 3

[theme Applications] [author Helmers]

p.72 BUILD A 6800 SYSTEM WITH THIS KIT

[theme Hardware Review] [author Kay]

p.82 CAN YOUR COMPUTER TELL TIME?

[theme Applications] [author Hogenson]

p.94 PHOTOGRAPHIC NOTES ON PROTOTYPE CONSTRUCTION

[theme Hardware] [author Helmers]

Background

p.12 THE SOFTWARE VACUUM

[theme Opinion] [author Ryland]

p.20 LOGIC PROBES - HARDWARE BUG CHASERS

[theme Tools] [author Burr]

p.30 WHAT IS A CHARACTER?

[theme Fundamentals] [author Peshka]

p.58 FLIP FLOPS EXPOSED

[theme Hardware] [author Browning]

p.64 READ ONLY MEMORY TECHNOLOGY

[theme Hardware] [author Lancaster]

p.70 THE HP-65: WORLD'S SMALLEST COMPUTER

[theme Systems] [author Nelson]

p.78 ASSEMBLING AN ALTAIR 8800

[theme Hardware] [author Zarrella]

Nucleus

p.4 In This BYTE

p.5 What This Country Needs

p.9 BOMB

p.10 Diagnostics

p.17, 88, 98 BYTE's Bits

p.18 Word Hunt

p.100 Clubs, Newsletters

p.102 Letters

p.108 Book Reviews

p.112 The BYTE Questionnaire

p.112 Reader's Service

In This Byte

In the Christmas BYTE you'll find the following morsels:

To quote an ancient philospher, "nature abhors a vacuum." Chris Ryland's Opinion: The Software Vacuum describes a void in the personal use computer marketplace. Will nature in the form of profit motive come in and fill the software vacuum? Only time will tell ...

Strange things sometimes occur in the electronic pathways of a computer. Putting on your detective hat may occasionally be required - in which case Alex. F. Burr's review Logic Probes - Hardware Bug Chasers will give you valuable information on several commercial products which can help debug your designs.

On the same theme but in the foreground this time, Robert Baker and John Errico have provided an article on a fairly sophisticated Powerless IC Test Clip which you can construct for $20 or so in parts. For the do-it-yourselfer, this design results in 16 little binary voltmeters which can be clamped onto an integrated circuit to examine the logic levels at each pin.

What is a Character? You can find out by reading Manfred Peshka's tutorial on some of the basic concepts of programming and information systems work. Old hands at the programming arts will find this to be an interesting review, and readers new to programming will find it necessary background material.

After an interruption, the LIFE Line series continues this month with the third installment. In LIFE Line 3 you'll find the beginning of information on the interactive commands which are decoded by the program.

The Flip Flop is an important element in designs used with computer chips and peripherals. William E. Browning has provided this article to introduce the less experienced readers to this fundamental building block.

Read Only Memory Technology can be used in situations ranging from clever logic and interface design to storage of systems programs in a computer. In his article on the subject in this issue, Don Lancaster gives some background information about ROM applications and several suggestions concerning their use as design elements.

What is The World's Smallest Computer System? Well, at this time it looks like the HP-65 pocket-size programmable calculator might qualify for the title. Find out why by turning to Richard Nelson's article on the subject.

The last BYTE featured a comparison of the Motorola 6800 CPU chip with a new contender from MOS Technology. In this issue, Gary Kay of Southwest Technical Products Corporation presents some information on the Motorola 6800 package his firm is supplying. What SWTPC has done is to take the standard parts, combine them with an attractive case, power supply and PC boards - and put the result into a package as a kit for readers to build.

What is it like to build an Altair computer kit? In his First Person Report: Assembling an Altair, John Zarrella describes his experience with the MITS product, from his decision to purchase, through assembly and hardware debugging.

Computers are fundamentally synchronous machines they beat to the tune of a periodic clock. With program timing loops, a computer can be made to count the beats of its clock. You can find out how to do this by reading Jim Hogenson's article Can Your Computer Tell Time?

When assembling complicated logic systems, one of the best methods for new and experimental work is use of solderless wire wrap interconnection. Some pointers on prototype assembly are found in Photographic Notes on Prototype Construction.

And on the cover, artist Robert Tinney illustrates the impact of these new toys upon traditional relationships.