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PowerBook 100 Series
The PowerBook 100 series is a line of laptop PCs produced by Apple Computer. In October 1991, Apple released the first three PowerBooks: the low-end PowerBook 100, the more powerful PowerBook 140, and the high-end PowerBook 170, the only one with an active matrix display. These machines caused a stir in the industry with their compact dark grey cases, use of a trackball, and the clever positioning of the keyboard which left room for palmrests on either side of the pointing device. Portable PC computers at the time tended to have the keyboard forward towards the user, with empty space behind it, so this was a surprising innovation and set the standard layout all future notebook computers would follow. The PowerBook 140 and 170 were designed first. The 100 benefited from their development and by components miniaturized by Sony after Apple sent them schematics of the Macintosh Portable, Mac Portable. The 100, however, did not sell well until Apple dropped the price substantially. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Matrix
Active matrix is a type of addressing scheme used in flat panel displays. In this method of switching individual elements (pixels), each pixel is attached to a transistor and capacitor ''actively'' maintaining the pixel state while other pixels are being addressed, in contrast with the older passive matrix technology in which each pixel must maintain its state passively, without being driven by circuitry. Active matrix technology was invented by Bernard J. Lechner at RCA, using MOSFETs (metal-oxide-semiconductor field-effect transistors). Active matrix technology was first demonstrated as a feasible device using thin-film transistors (TFTs) by T. Peter Brody, Fang Chen Luo and their team at the Thin-Film Devices department of Westinghouse Electric Corporation in 1974, and the term was introduced into the literature in 1975. Given an ''m'' × ''n'' matrix, the number of connectors needed to address the display is ''m'' + ''n'' (just like in passive matrix techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola
Motorola, Inc. () was an American Multinational corporation, multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011. Motorola Solutions is the legal successor to Motorola, Inc., as the reorganization was structured with Motorola Mobility being spun off. Motorola Mobility was acquired by Lenovo in 2014. Motorola designed and sold wireless network equipment such as cellular transmission base stations and signal amplifiers. Motorola's home and broadcast network products included set-top boxes, digital video recorders, and network equipment used to enable video broadcasting, computer telephony, and high-definition television. Its business and government customers consisted mainly of wireless voice and broadband systems (used to build private networks), and, public safety communicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 5300
The PowerBook 5300 is the first generation of PowerBook laptops manufactured by Apple Computer to use the PowerPC processor. Released in August 1995, these PowerBooks were notable for being the first to feature hot-swappable expansion modules for a variety of different units such as Zip drives; PC card slots as standard; and an infrared communication port. In common with most preceding Macintosh portables, SCSI, Serial, and ADB ports were included as standard. An internal expansion slot was also available for installing a variety of modules including Ethernet and video cards to drive a second monitor in mirroring or dual-screen modes. Although a significant advance over preceding portable Macs, the PowerBook 5300 suffered from a number of design faults and manufacturing problems that have led to it being cited as among the worst Apple products of all time.lowendmac.com:PowerBook 5300: A Compromised Mac Among other issues, it is one of the first laptops to suffer negative ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 190
The PowerBook 190 and its companion PowerBook 190cs are laptop computers manufactured by Apple Computer as part of their PowerBook brand, introduced to the market in August 1995. The two models differ only in their screen: the 190 had a 9.5" greyscale display, while the 190cs featured a 10.4" color display. Apple's target sales audience for this model was the college student in need of a no-frills portable computer. In terms of hardware, along with the PowerBook 150, the 190 has much in common with Apple's "professional" laptop of the same period, the PowerBook 5300 series. In exchange for the cheaper price point (approximately US$2,200 compared to over US$6,000 for the cutting-edge PowerBook 5300ce), the 190 was equipped with a passive matrix LCD rather than a crisper active matrix screen. More significantly, while the 5300s ran PowerPC 603e processors at 100 or 117 MHz, the 190 had only a Motorola 68LC040 clocked at 33 MHz - in fact, the 190/cs were the last Macintoshe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 180
The PowerBook 180 is a portable computer released by Apple Computer along with the PowerBook 160 in October 1992. At the time, it constituted the new top-of-the-range model, replacing the previous PowerBook 170. Its case design and features are the same as that of the 170, but it shipped with the more powerful 33 MHz Motorola 68030 CPU and Motorola 68882 FPU. Along with the 160, it introduced a new power-saving feature which allowed the processor to run at a slower 16 MHz rate, the same speed as the original 140. PowerBook 180 The PowerBook 180 came with a (diagonal) active matrix LCD screen capable of displaying 4-bit grayscale at a resolution of 640×400, and a trackball was mounted beneath the keyboard. A 1.44 MB floppy disk drive and 80 MB 2.5-inch hard drive were also standard. The Apple Powerbook also gave an option of possible expansion to a 120 MB hard drive. They are equipped with keyboard stands to slant the keyboard. Like the Macintosh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 160
The PowerBook 160 is a portable computer that was released by Apple Computer along with the PowerBook 180 on October 19, 1992 and the PowerBook 165 variants were released the following year. At the time, it constituted the mid-range model replacing the previous PowerBook 140 in processing power. The PowerBook 160 was sold until August 16, 1993. Basic features Its case design is the same as that of the PowerBook 180, but it shipped with the less powerful 25 MHz Motorola 68030 CPU and no FPU, identically to the low-end 145. However, the PowerBook 160 came with a (diagonal) passive matrix LCD screen, which for the first time was capable of displaying 4-bit grayscale. The 160 and the 180 were the first PowerBooks to add an external color video port like the Macintosh Portable before it, as well as increasing the maximum RAM to 14 MB. Both PowerBooks introduced a new power saving feature which allowed their processors to run at a slower 16 MHz rate, the same speed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 145B
The PowerBook 140 was released in the first line of PowerBooks. It was the mid-range PowerBook, between the low-end 100 and the high-end 170. As with the PowerBook 170, and unlike the 100, this PowerBook featured an internal floppy drive. Codenames for this model are: Tim Lite, Tim LC, Replacements, and Leary. In 1992, it was replaced by the PowerBook 145, which was essentially a speed bump, though the PowerBook 160 essentially superseded it as the new mid-line model. Features Intended as a replacement for the Portable, the 140 series was identical to the 170, though it compromised a number of the high-end model's features to make it a more affordable mid-range option. The most apparent difference was that the 140 used a cheaper, diagonal passive matrix display instead of the sharper active matrix version used on the 170. Internally, in addition to a slower 16 MHz processor, the 140 also lacked a Floating Point Unit (FPU) and could not be upgraded. It also came standard wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PowerBook 145
The PowerBook 140 was released in the first line of PowerBooks. It was the mid-range PowerBook, between the low-end 100 and the high-end 170. As with the PowerBook 170, and unlike the 100, this PowerBook featured an internal floppy drive. Codenames for this model are: Tim Lite, Tim LC, Replacements, and Leary. In 1992, it was replaced by the PowerBook 145, which was essentially a speed bump, though the PowerBook 160 essentially superseded it as the new mid-line model. Features Intended as a replacement for the Portable, the 140 series was identical to the 170, though it compromised a number of the high-end model's features to make it a more affordable mid-range option. The most apparent difference was that the 140 used a cheaper, diagonal passive matrix display instead of the sharper active matrix version used on the 170. Internally, in addition to a slower 16 MHz processor, the 140 also lacked a Floating Point Unit (FPU) and could not be upgraded. It also came standard wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intel 80486
The Intel 486, officially named i486 and also known as 80486, is a microprocessor. It is a higher-performance follow-up to the Intel 386. The i486 was introduced in 1989. It represents the fourth generation of binary compatible CPUs following the 8086 of 1978, the Intel 80286 of 1982, and 1985's i386. It was the first tightly- pipelined x86 design as well as the first x86 chip to include more than one million transistors. It offered a large on-chip cache and an integrated floating-point unit. A typical 50 MHz i486 executes around 40 million instructions per second (MIPS), reaching 50 MIPS peak performance. It is approximately twice as fast as the i386 or i286 per clock cycle. The i486's improved performance is thanks to its five-stage pipeline with all stages bound to a single cycle. The enhanced FPU unit on the chip was significantly faster than the i387 FPU per cycle. The intel 80387 FPU ("i387") was a separate, optional math coprocessor that was installed in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola 68040
The Motorola 68040 ("''sixty-eight-oh-forty''") is a 32-bit microprocessor in the Motorola 68000 series, released in 1990. It is the successor to the 68030 and is followed by the 68060, skipping the 68050. In keeping with general Motorola naming, the 68040 is often referred to as simply the '040 (pronounced ''oh-four-oh'' or ''oh-forty''). The 68040 was the first 680x0 family member with an on-chip Floating-Point Unit (FPU). It thus included all of the functionality that previously required external chips, namely the FPU and Memory Management Unit (MMU), which was added in the 68030. It also had split instruction and data caches of 4 kilobytes each. It was fully pipelined, with six stages. Versions of the 68040 were created for specific market segments, including the 68LC040, which removed the FPU, and the 68EC040, which removed both the FPU and MMU. Motorola had intended the EC variant for embedded use, but embedded processors during the 68040's time did not need the powe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compaq
Compaq Computer Corporation (sometimes abbreviated to CQ prior to a 2007 rebranding) was an American information technology company founded in 1982 that developed, sold, and supported computers and related products and services. Compaq produced some of the first IBM PC compatible computers, being the second company after Columbia Data Products to legally reverse engineer the IBM Personal Computer. It rose to become the largest supplier of PC systems during the 1990s before being overtaken by Dell in 2001. Struggling to keep up in the price wars against Dell, as well as with a risky acquisition of DEC, Compaq was acquired for US$25 billion by HP in 2002. The Compaq brand remained in use by HP for lower-end systems until 2013 when it was discontinued. Since 2013, the brand is currently licensed to third parties for use on electronics in Brazil and India. The company was formed by Rod Canion, Jim Harris, and Bill Murto, all of whom were former Texas Instruments senior managers. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
