An external 5¼-inch floppy disk drive, the Disk II, hooked up by means of a controller card that plugged into amongst the pc's expansion slots (generally slot six), was utilized for data storage and retrieval to exchange cassettes. The Disk II interface, created by Steve Wozniak, was considered to be an engineering masterpiece for its financial system of electronic parts. Whilst other controllers experienced dozens of chips for synchronizing knowledge I/O with disk rotation, seeking The pinnacle to the appropriate keep track of, and encoding the information into magnetic pulses, Wozniak's controller card experienced couple of chips; rather, the Apple DOS used program to complete these functions. The Team Code Recording utilized by the controller was simpler and simpler to put into action in software than the more common MFM.
Apple and lots of 3rd-celebration builders built application offered on tape at the beginning, but after the Disk II became offered in 1978, tape-dependent Apple II software primarily disappeared from the marketplace.
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In its letterhead and organization card implementation, the rounded "a" from the logotype echoed the "bite" in the logo. This emblem was created concurrently having an ad along with a brochure; the latter getting produced for distribution to begin with at the main West Coast Laptop or computer Faire. Ever considering that the first Apple II, Apple has paid out higher attention to its top quality of packaging, partly as a consequence of Steve Jobs' personalized Choices and opinions on packaging and last product or service appearance. All of Apple's packaging for your Apple II sequence appeared similar, featuring a lot of cleanse white Place and displaying the Apple rainbow logo prominently.[forty] For a number of decades up till the late 1980s, Apple employed the Motter Tektura font for packaging, right until altering on the Apple Garamond font.
In the long run, the minimal chip depend of the controller helped make Apple's Disk II the main inexpensive floppy drive for private pcs. Being a facet outcome, Wozniak's plan manufactured it straightforward for proprietary software builders to copy-shield the media on which their software transported by modifying the reduced-amount sector structure or stepping the drive's head concerning the tracks; inevitably, other corporations at some point offered software to foil this defense. Another Wozniak optimization authorized him to omit Shugart's Keep track of-0 sensor. In the event the Running Program wants to go to trace 0, the controller merely moves forty instances toward the subsequent-lower-numbered observe, relying on the mechanical halt to prevent it likely any more down than track 0. This method, named "recalibration", produced a loud buzzing (immediate mechanical chattering) seem That usually frightened Apple novices.
The Apple II sequence (trademarked with square brackets as "Apple ][" and rendered on afterwards styles as "Apple //") can be a family members of household personal computers, among the to start with remarkably prosperous mass-developed text command microcomputer products and solutions,[one] created primarily by Steve Wozniak, created by Apple Personal computer (now Apple Inc.) and introduced in 1977 with the initial Apple II. Concerning ease of use, characteristics and expandability, the Apple II was An important technological improvement around its predecessor, the Apple I, a minimal-manufacturing bare circuit board Computer system for electronics hobbyists that pioneered many functions that created the Apple II a business accomplishment.
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When the main Apple II clones were generally exact copies of their Apple counterparts that competed generally on selling price, many clones had additional abilities far too. A Franklin design, the Ace one thousand, sported a numeric keypad and lower-case lengthy prior to these functions had been extra to your Apple II line.
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To Perform up the portability, two distinctive monochrome LCD shows had been marketed for use Along with the IIc's video growth port, although both of those have been shorter-lived as a consequence of large Charge and poor legibility.
The main peripheral have a peek here card was a blank prototyping card intended for electronics lovers who desired to design their own personal peripherals for the Apple II.
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Basis, a German business, designed The idea 108,[fifty this contact form one] a clone with the Apple II that included each a 6502 processor along with the Zilog Z80, letting it to operate the CP/M operating technique in addition to most Apple II software. This equipment was unconventional in that it absolutely was housed inside of a significant Solid aluminum chassis.