Question: An analog board was used in which third model of the Macintosh line?

full_context: Document 1: Apple Monitor 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.
Document 2: Macintosh: The Macintosh ( ; (branded as Mac since 1998) is a series of personal computers (PCs) designed, developed, and marketed by Apple Inc. Steve Jobs introduced the original Macintosh computer on January 24, 1984. This was the company's first mass-market personal computer featuring an integral graphical user interface and mouse. This first model was later renamed to "Macintosh 128k" for uniqueness amongst a populous family of subsequently updated models which are also based on Apple's same proprietary architecture. Since 1998, Apple has largely phased out the Macintosh name in favor of "Mac", and the product family has been nicknamed "Mac" or "the Mac" since the development of the first model.
Document 3: Apple II Plus: 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.
Document 4: Comparison of single-board microcontrollers: Comparison of Single-board microcontrollers excluding Single-board computers
Document 5: Power Macintosh 7100: The Power Macintosh 7100 is a personal computer that was designed, manufactured and sold by Apple Computer Inc. from March 1994 to January 1996. It is the mid-range machine of the first generation of Power Macintosh line, between the Power Macintosh 6100 and the Power Macintosh 8100. The 7100 re-used the Macintosh IIvx case with few changes. There were two versions of the 7100; the original 66 MHz version and an 80 MHz version that replaced it in January 1995.
Document 6: Apple IIc: 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.
Document 7: Analog board: An analog board is a circuit board that contains the majority of analog circuitry in certain Apple Macintosh computers. The analog board was one of two circuit boards within many early Macintosh computers, including the Macintosh 128K/512K/Plus, Macintosh SE series, and Macintosh Classic series. The analog board contained several capacitors, a battery compartment, and some other analog circuitry. Some later all-in-one Macintosh computers also included analog boards, with the most recent being the iMac G3 and eMac. In these computers, the analog board functioned as the power supply to other parts within the system, and also functioned to control the CRT display within the computer. The other board was the logic board, which contained all of the computer's digital logic circuitry, such as the processor and memory.
Document 8: Macintosh Plus: The Macintosh Plus computer is the third model in the Macintosh line, introduced on January 16, 1986, two years after the original Macintosh and a little more than a year after the Macintosh 512K, with a price tag of US$2599. As an evolutionary improvement over the 512K, it shipped with 1 MB of RAM standard, expandable to 4 MB, and an external SCSI peripheral bus, among smaller improvements. It originally had the same generally beige-colored case as the original Macintosh ("Pantone 453"), but in 1987, the case color was changed to the long-lived, warm gray "Platinum" color. It is the earliest Macintosh model able to run System 7 OS.
Document 9: Classic Mac OS: The "Classic" Mac OS is a graphical user interface-based operating system developed by Apple Inc. for its Macintosh family of personal computers from 1984 until 2001, the original member of the series of Macintosh operating systems. The Macintosh platform, which was introduced in the classic Mac OS, is credited with having popularized the early GUI concept. Mac OS was preinstalled on every Macintosh computer that was made during the era it was developed; it was also sold separately in retail stores.
Document 10: Apple IIc Plus: 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.
Document 11: Macintosh operating systems: The family of Macintosh operating systems developed by Apple Inc. includes the graphical user interface-based operating systems it has designed for use with its Macintosh series of personal computers since 1984, as well as the related system software it once created for compatible third-party systems.
Document 12: Macintosh External Disk Drive: 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".
Document 13: Single-board computer: A single-board computer (SBC) is a complete computer built on a single circuit board, with microprocessor(s), memory, input/output (I/O) and other features required of a functional computer. Single-board computers were made as demonstration or development systems, for educational systems, or for use as embedded computer controllers. Many types of home computers or portable computers integrate all their functions onto a single printed circuit board.
Document 14: Computer module: A computer module is a selection of independent electronic circuits packaged onto a circuit board to provide a basic function within a computer. An example might be an inverter or flip-flop, which would require two or more transistors and a small number of additional supporting devices. Modules would be inserted into a chassis and then wired together to produce a larger logic unit, like an adder.
Document 15: MacX: MacX is a display server implementation supporting the X11 display server protocol that ran on System 7, Mac OS 8, and Mac OS 9. It also ran under A/UX. Prior to X11R4 and the introduction of the PowerPC-based Power Macintosh, this server was developed internally by Apple Inc. for the Motorola 68000 based Macintoshes. MacX was initially developed within the Networking and Communications organization as one component of the Apple DEC Alliance suite of products, but later was moved to Apple's A/UX group since X11 was (and is) an important part of UNIX user interfaces. Versions supporting X11R4 and X11R5 were developed for Apple by a small team of engineers at AGE Logic, Inc., a San Diego, California company. AGE also OEMed the MacX software under the trade name XoftWare for Macintosh. Apple provided early versions of the Power Macintosh to AGE Logic, and the result was a binary that supported both the Power Macintosh as well as earlier, 68000-based systems.
ground_truth: Macintosh Plus