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- IBM_PC_Convertible abstract "The IBM PC Convertible, released April 3, 1986, was IBM's first laptop computer and was also the first IBM computer to use the 3.5" floppy disk which went on to become the standard. Like modern laptops, it featured power management and the ability to run from batteries. It was the follow-up to the IBM Portable and was model number 5140. The concept and the design of the body was made by the German industrial designer Richard Sapper.It used an Intel 80c88 CPU (a CMOS version of the Intel 8088) running at 4.77 MHz, 256 kB of RAM (expandable to 640 kB), dual 720 kB 3.5" floppy drives, and a monochrome CGA-compatible LCD screen at a price of $2,000. It weighed 13 pounds (5.8 kg) and featured a built-in carrying handle.The PC Convertible had expansion capabilities through a proprietary ISA bus-based port on the rear of the machine. Extension modules, including a small printer and a video output module, could be snapped into place. The machine could also take an internal modem, but there was no room for an internal hard disk.Pressing the power button on the computer did not turn it off, but put the machine into a "suspend" mode. This avoided the long process of booting up. The CMOS 80c88 CPU has a static core, which means that it can be stopped simply by stopping the system clock oscillator that is driving it, and it will hold its state indefinitely and resume processing at the point it was stopped when the clock signal is restarted, as long as it is kept powered. CMOS circuits use extremely little power when they are not changing state, so an 80c88 that is on but not being clocked uses very little power.The screen was not very tall, so text characters and graphics were compressed vertically, appearing about half their normal height. The display was capable of resolutions of 80x25 (text), 640x200, and 320x200. Pressing a lever between the two floppy drives just below the display detached the entire screen from the unit. This feature allowed the convenient use of a full-size desktop monitor while at one's desk, an early forerunner of the "docking station" concept.The machine sold very poorly for a number of reasons. The Convertible was heavy, not much faster than the Portable it replaced (despite the newer CMOS processor and use of static RAM), didn't come with traditional PC expansion ports (such as serial ports and a parallel port) without an add-on, and had a hard-to-read, oddly-shaped LCD screen (the first screens lacked a backlight). It also competed against faster portables based on the Intel 80286 that offered optional hard drives, from companies such as Compaq, and laptops from companies such as Toshiba and Zenith that were lighter and offered similar specifications, sometimes at half the price. The keyboard was also widely criticized.It was replaced in 1991 by the IBM PS/2 L40 SX, and in Japan by the IBM Personal System/55note, which was the predecessor to the ThinkPad.".
- IBM_PC_Convertible cpu Intel.
- IBM_PC_Convertible successor 55_note.
- IBM_PC_Convertible successor 2.
- IBM_PC_Convertible thumbnail Ibm-convertible.jpg?width=300.
- IBM_PC_Convertible wikiPageExternalLink attic_013.html.
- IBM_PC_Convertible wikiPageExternalLink ibm_5140.html.
- IBM_PC_Convertible wikiPageExternalLink ibm5140.
- IBM_PC_Convertible wikiPageID "274034".
- IBM_PC_Convertible wikiPageRevisionID "602556555".
- IBM_PC_Convertible caption "IBM PC Convertible".
- IBM_PC_Convertible cpu "Intel 80c88 CPU @ 4.77 MHz".
- IBM_PC_Convertible display "Monochrome CGA-compatible LCD screen.".
- IBM_PC_Convertible graphics "80".
- IBM_PC_Convertible hasPhotoCollection IBM_PC_Convertible.
- IBM_PC_Convertible memory "256".
- IBM_PC_Convertible name "IBM PC Convertible".
- IBM_PC_Convertible os "IBM PC DOS with custom icon-oriented shell interface".
- IBM_PC_Convertible power "Battery: 9.6v/2400mAh".
- IBM_PC_Convertible power "Power supply: 15 VDC, 2.7A.".
- IBM_PC_Convertible price "US$2,000.".
- IBM_PC_Convertible releasedate "1986-04-03".
- IBM_PC_Convertible storage "Dual 720 kB 3.5" floppy drives".
- IBM_PC_Convertible successor 55_note.
- IBM_PC_Convertible successor 2.
- IBM_PC_Convertible weight "13".
- IBM_PC_Convertible subject Category:IBM_laptops.
- IBM_PC_Convertible subject Category:Portable_computers.
- IBM_PC_Convertible type Artifact100021939.
- IBM_PC_Convertible type Computer103082979.
- IBM_PC_Convertible type Device103183080.
- IBM_PC_Convertible type DigitalComputer103196324.
- IBM_PC_Convertible type IBMLaptops.
- IBM_PC_Convertible type Instrumentality103575240.
- IBM_PC_Convertible type Laptop103642806.
- IBM_PC_Convertible type Machine103699975.
- IBM_PC_Convertible type Object100002684.
- IBM_PC_Convertible type PersonalComputer103918480.
- IBM_PC_Convertible type PhysicalEntity100001930.
- IBM_PC_Convertible type PortableComputer103985232.
- IBM_PC_Convertible type PortableComputers.
- IBM_PC_Convertible type Whole100003553.
- IBM_PC_Convertible type Device.
- IBM_PC_Convertible type InformationAppliance.
- IBM_PC_Convertible type DesignedArtifact.
- IBM_PC_Convertible comment "The IBM PC Convertible, released April 3, 1986, was IBM's first laptop computer and was also the first IBM computer to use the 3.5" floppy disk which went on to become the standard. Like modern laptops, it featured power management and the ability to run from batteries. It was the follow-up to the IBM Portable and was model number 5140.".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible label "IBM PC Convertible".
- IBM_PC_Convertible sameAs IBM_PC_Convertible.
- IBM_PC_Convertible sameAs IBM_PC_Convertible.
- IBM_PC_Convertible sameAs IBM_PC_Convertible.
- IBM_PC_Convertible sameAs IBM_PC_Convertible.
- IBM_PC_Convertible sameAs m.01p2xm.
- IBM_PC_Convertible sameAs Q1653122.
- IBM_PC_Convertible sameAs Q1653122.
- IBM_PC_Convertible sameAs IBM_PC_Convertible.
- IBM_PC_Convertible wasDerivedFrom IBM_PC_Convertible?oldid=602556555.
- IBM_PC_Convertible depiction Ibm-convertible.jpg.
- IBM_PC_Convertible isPrimaryTopicOf IBM_PC_Convertible.
- IBM_PC_Convertible name "IBM PC Convertible".