Question: Apple II series and Acorn Atom are both what?

Context articles: Macintosh External Disk Drive
Apple IIc
Timeline of the Apple II family
Apple ProDOS
Apple II Plus
Apple IIc Plus
Apple Monitor II
Apple II series
Applesoft BASIC
Acorn Atom

The Macintosh External Disk Drive is the original of a series of external 3.5" floppy disk drives manufactured and sold by Apple Computer exclusively for the Macintosh series of computers introduced in January 1984.
 Later, Apple would unify their external drives to work cross-platform between the Macintosh and Apple II product lines, dropping the name "Macintosh" from the drives.
 Though Apple had been producing external floppy disk drives prior to 1984, they were exclusively developed for the Apple II, III and Lisa computers using the industry standard 5.25" flexible disk format.
 The Macintosh external drives were the first to widely introduce Sony's new 3.5" rigid disk standard commercially and throughout their product line.
 Apple produced only one external 3.5" drive exclusively for use with the Apple II series called the "Apple UniDisk 3.5".
The Apple IIc, the fourth model in the Apple II series of personal computers, is Apple Computer’s first endeavor to produce a portable computer.
 The result was a 7.5 lb notebook-sized version of the Apple II that could be transported from place to place.
 The "c" in the name stood for "compact", referring to the fact it was essentially a complete Apple II computer setup (minus display and power supply) squeezed into a small notebook-sized housing.
 While sporting a built-in floppy drive and new rear peripheral expansion ports integrated onto the main logic board, it lacks the internal expansion slots and direct motherboard access of earlier Apple IIs, making it a closed system like the Macintosh.
 However, that was the intended direction for this model — a more appliance-like machine, ready to use out of the box, requiring no technical know-how or experience to hook up and therefore attractive to first-time users.
This timeline of Apple II Family models lists all major types of Apple II computers produced by Apple Computer in order of introduction date.
 The Apple I, Apple III and Apple Lisa are included, even though they are not classed as part of the Apple II series (or a Macintosh), because of their unique role in Apple's product lineup of the era.
ProDOS is the name of two similar operating systems for the Apple II series of personal computers.
 The original ProDOS, renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II series computers, and was distributed from 1983 to 1993.
 The other, ProDOS 16, was a stop-gap solution for the 16-bit Apple II that was replaced by GS/OS within two years.
The Apple II Plus (stylized as Apple ][+) is the second model of the Apple II series of personal computers produced by Apple Computer, Inc. It was sold from June 1979 to December 1982.
The Apple IIc Plus is the sixth and final model in the Apple II series of personal computers, produced by Apple Computer.
 The ""Plus"" in the name was a reference to the additional features it offered over the original portable Apple IIc, such as greater storage capacity (a built-in 3.5-inch floppy drive replacing the classic 5.25-inch drive), increased processing speed, and a general standardization of the system components.
 In a notable change of direction, the Apple IIc Plus, for the most part, did not introduce new technology or any further evolutionary contributions to the Apple II series, instead merely integrating existing peripherals into the original Apple IIc design.
 The development of the 8-bit machine was criticized by quarters more interested in the significantly more advanced 16-bit Apple II.
The Apple Monitor II is a CRT-based green monochrome 12-inch monitor manufactured by Sanyo for Apple Computer; for the Apple II personal computer family.
 Apple did not manufacture the monitor until halfway through the lifespan of the II series.
 The business-line Apple III had its own Apple Monitor III long before.
 Many home users of Apple II computers used their televisions as computer monitors before the Monitor II was released.
 It featured an inner vertical-swiveling frame.
 This allowed users to adjust the viewing angle up or down to suit their taste without the addition of a tilt-and-swivel device.
 The Monitor II was widely adjustable for the time, as it included adjustments for the size and location of the image on the screen.
 These adjustments had a very small influence on the picture, however, much to the dislike of some users.
 The Monitor II was designed for the Apple II+, but was used widely throughout the Apple II product line, most recognizably on the Apple IIe.
The Apple II series (trademarked with square brackets as "Apple ][" and rendered on later models as "Apple //") is a family of home computers, one of the first highly successful mass-produced text command microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.) and introduced in 1977 with the original Apple II.
 In terms of ease of use, features and expandability, the Apple II was a major technological advancement over its predecessor, the Apple I, a limited-production bare circuit board computer for electronics hobbyists that pioneered many features that made the Apple II a commercial success.
 Introduced at the West Coast Computer Faire on April 16, 1977, the Apple II was among the first successful personal computers; it launched the Apple company into a successful business (and allowed several related companies to start).
 Throughout the years, a number of models were sold, with the most popular model remaining relatively little changed into the 1990s.
 While primarily an 8-bit computer, by mid-run a 16-bit model was introduced.
Applesoft BASIC is a dialect of Microsoft BASIC, developed by Marc McDonald and Ric Weiland, supplied with the Apple II series of computers.
 It supersedes Integer BASIC and is the BASIC in ROM in all Apple II series computers after the original Apple II model.
 It is also referred to as FP BASIC (from "floating point") because of the Disk Operating System (DOS) command used to invoke it, instead of INT for Integer BASIC.
 Applesoft BASIC was supplied by Microsoft and its name is derived from the names of both Apple and Microsoft.
 Apple employees, including Randy Wigginton, adapted Microsoft's interpreter for the Apple II and added several features.
 The first version of Applesoft was released in 1977 only on cassette tape and lacked proper support for high-resolution graphics.
 Applesoft II, which was made available on cassette and disk and in the ROM of the Apple II Plus and subsequent models, was released in 1978.
 It is this latter version, which has some syntax differences from the first as well as support for the Apple II high-resolution graphics modes, that most people mean by the term "Applesoft".
The Acorn Atom is a home computer made by Acorn Computers Ltd from 1980 to 1982, when it was replaced by the BBC Micro (originally "Proton").