PowerBook 170
Encyclopedia
The PowerBook 170 was released by Apple Inc. in 1991 along with the PowerBook 100
PowerBook 100
The PowerBook 100 was a portable subnotebook personal computer manufactured by Apple Computer and introduced on October 21, 1991 at the COMDEX computer expo in Las Vegas, Nevada. Priced at US$2,300, the PowerBook 100 was the low-end model of the first three simultaneously-released...

 and the PowerBook 140
PowerBook 140
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,...

. Identical to the 140, it was the high end of the original
PowerBook line featuring a faster 25 MHz Motorola 68030
Motorola 68030
The Motorola 68030 is a 32-bit microprocessor in Motorola's 68000 family. It was released in 1987. The 68030 was the successor to the Motorola 68020, and was followed by the Motorola 68040. In keeping with general Motorola naming, this CPU is often referred to as the 030 .The 68030 features on-chip...

 processor with Floating point unit
Floating point unit
A floating-point unit is a part of a computer system specially designed to carry out operations on floating point numbers. Typical operations are addition, subtraction, multiplication, division, and square root...

 (FPU) and a more expensive and significantly better quality 10 in (254 mm) active matrix
Active matrix
Active matrix is a type of addressing scheme used in flat panel displays. The term describes a method of switching individual elements of a flat panel display, using a CdSe or Silicon-based thin-film transistor for each pixel...

 display. It was replaced by the PowerBook 180
Powerbook 180
The PowerBook 180 was a portable computer released by Apple Computer, Inc. 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...

 in 1992.

Features

Though the PowerBook 100 is the direct descendant of the Macintosh Portable
Macintosh Portable
The Macintosh Portable was Apple Inc.'s first attempt at making a battery-powered portable Macintosh personal computer that held the power of a desktop Macintosh...

 based on its internal architecture, the 170 is the Portable's direct successor. A no-compromise, portable version of the desktop Macintosh, the 170 includes virtually all of the features incorporated in the original Portable, as on a comparable desktop of the day, but in a smaller and sleeker case design. Initiated as a more suitable replacement for the Portable, the only features the first generation 170 did not include in its reduced space were an external video port and internal ROM
Read-only memory
Read-only memory is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware .In its strictest sense, ROM refers only...

 and PDS
Processor Direct Slot
Processor Direct Slot or PDS introduced by Apple Computer, in several of their Macintosh models, provided a limited measure of hardware expandibility, without going to the expense of providing full-fledged bus expansion slots.Typically, a machine would feature multiple bus expansions slots, if any...

 expansion slots. Indeed, Apple canceled its own external monitor adapter for the Portable shortly after it was announced, instead relying on numerous third party providers for solutions (still applicable to the 170) and FCC regulations of the day prevented any real use of the PDS expansion slot, by restricting any external connections to it. The PowerBook 180
Powerbook 180
The PowerBook 180 was a portable computer released by Apple Computer, Inc. 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...

 replacement would address external video less than a year later, but expansion slots would not return to Macintosh portables until three years later with the PowerBook 500 series, in the form of PCMCIA cards. The 170 also dropped the external floppy disk port (only the Macintosh Classic II
Macintosh Classic II
The Apple Macintosh Classic II replaced the Macintosh SE/30 in the compact Macintosh line in 1991. Like the SE/30, the Classic II was powered by a 16 MHz Motorola 68030 CPU and 40 or 80 MB hard disk, but in contrast to its predecessor, it was limited by a 16-bit data bus and a 10 MB memory...

 still had one) and made no provision for a second internal floppy disk port (a feature also missing from the rest of the desktop line by this time). Overall, it had roughly the equivalent features and performance of the powerful Macintosh IIci
Macintosh IIci
The Apple Macintosh IIci was an improvement on the Macintosh IIcx. Sharing the same compact case design with three expansion slots, the IIci improved upon the IIcx's 16 MHz Motorola 68030 CPU and 68882 FPU, replacing them with 25 MHz versions of these chips. The IIci came with either a 40 or...

 desktop in a laptop.

The 170 was introduced with System 7.0.1
System 7
System 7 is the name of a Macintosh operating system introduced in 1991.System 7 may also refer to:* System 7 , a British dance/ambient band* System 7 , 1991 album* IBM System/7, a 1970s computer system...

, specifically to support new power management and other unique hardware features. However, due to the RAM prices in 1991, combined with its already high list price, the 170, like the 100 and 140, only had 2 megabyte
Megabyte
The megabyte is a multiple of the unit byte for digital information storage or transmission with two different values depending on context: bytes generally for computer memory; and one million bytes generally for computer storage. The IEEE Standards Board has decided that "Mega will mean 1 000...

s (MB) RAM soldered directly onto the logicboard, which critics felt was restrictive for use with System 7. Further, since localized versions of System 7 were not yet available worldwide, the Japanese 6.0.7
System 6
System 6 is a graphical user interface-based operating system for Macintosh computers. It was released in 1988 by Apple Computer and was part of the Mac OS line of operating systems. System 6 was shipped with various Macintosh computers until it was succeeded by System 7 in 1991. The boxed...

 KanjiTalk
KanjiTalk
KanjiTalk was the name given by Apple to its Japanese language localization of Mac OS. It consisted of translated applications, a set of Japanese fonts, and a Japanese input method called Kotoeri. The software was sold and supported only in Japan...

 version of Apple's System software, was modified to support all three new PowerBooks and released as version J-6.0.7.1. As a result, this version was unofficially adapted for use with the standard 6.0.7 allowing many users to run System 6 on their PowerBooks, rather than upgrading on-board RAM with an expensive proprietary RAM card (a 6 MB card was US $899). The 170 shipped with an additional 2 MB RAM card already installed, so it was less of a problem; however, 4 MB was the minimum recommended RAM size for use with System 7 and not practical for use with a RAM Disk
RAM disk
A RAM disk or RAM drive is a block of RAM that a computer's software is treating as if the memory were a disk drive...

, a battery power-saving feature.

Design

Though released at the same time as the PowerBook 140
PowerBook 140
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,...

 and PowerBook 100
PowerBook 100
The PowerBook 100 was a portable subnotebook personal computer manufactured by Apple Computer and introduced on October 21, 1991 at the COMDEX computer expo in Las Vegas, Nevada. Priced at US$2,300, the PowerBook 100 was the low-end model of the first three simultaneously-released...

, both the 140 and 170 were designed entirely by Apple, while the 100 was being miniaturized by Sony from the full-sized Macintosh Portable
Macintosh Portable
The Macintosh Portable was Apple Inc.'s first attempt at making a battery-powered portable Macintosh personal computer that held the power of a desktop Macintosh...

. As a result, the 170 represents the very first created by Apple, with the 100 actually representing the first design improvements, though its internal architecture is the oldest in the series.

Specifications

  • Processor: Motorola 68030
    Motorola 68030
    The Motorola 68030 is a 32-bit microprocessor in Motorola's 68000 family. It was released in 1987. The 68030 was the successor to the Motorola 68020, and was followed by the Motorola 68040. In keeping with general Motorola naming, this CPU is often referred to as the 030 .The 68030 features on-chip...

     CPU and Motorola 68882 FPU, both running at 25 MHz
  • RAM: 2 MB onboard, shipped with 4 MB, can be expanded to 6 or 8 MB
  • ROM: 1 MB
  • Hard disk
    Hard disk
    A hard disk drive is a non-volatile, random access digital magnetic data storage device. It features rotating rigid platters on a motor-driven spindle within a protective enclosure. Data is magnetically read from and written to the platter by read/write heads that float on a film of air above the...

    : 40-80 MB
  • Floppy disk
    Floppy disk
    A floppy disk is a disk storage medium composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic carrier lined with fabric that removes dust particles...

    : 1.44 MB Superdrive
  • Systems supported: System J-6.0.7.1
    System 6
    System 6 is a graphical user interface-based operating system for Macintosh computers. It was released in 1988 by Apple Computer and was part of the Mac OS line of operating systems. System 6 was shipped with various Macintosh computers until it was succeeded by System 7 in 1991. The boxed...

    , System 7.0.1
    System 7 (Macintosh)
    System 7 is a single-user graphical user interface-based operating system for Macintosh computers. It was introduced on May 13, 1991 by Apple Computer. It succeeded System 6, and was the main Macintosh operating system until it was succeeded by Mac OS 8 in 1997...

    -Mac OS
    Mac OS
    Mac OS is a series of graphical user interface-based operating systems developed by Apple Inc. for their Macintosh line of computer systems. The Macintosh user experience is credited with popularizing the graphical user interface...

     7.6.1
  • ADB
    Apple Desktop Bus
    Apple Desktop Bus is an obsolete bit-serial computer bus connecting low-speed devices to computers. Used primarily on the Macintosh platform, ADB equipment is still available but not supported by most Apple hardware manufactured since 1999....

    : Yes (1 port)
  • Serial: Yes (2 ports)
  • Modem: optional (used for this model's expansion port)
  • Screen: active matrix, 1bpp 640×400

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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