Macintosh Portable

The Macintosh Portable is a portable computer designed, manufactured and sold by Apple Computer, Inc. from September 1989 to October 1991. It is the first battery-powered Macintosh, which garnered significant excitement from critics, but sales to customers were quite low. It featured a fast, sharp, and expensive black and white active matrix LCD screen in a hinged design that covered the keyboard when the machine was not in use. The Portable was one of the early consumer laptops to employ an active matrix panel, and only the most expensive of the initial PowerBook line, the PowerBook 170, used one, due to the high cost. The cursor pointing function was handled by a built-in trackball that could be removed and located on either side of the keyboard. It used expensive SRAM in an effort to maximize battery life and to provide an “instant on” low power sleep mode. The machine was designed to deliver high performance, at the cost of price and weight.

History of Macintosh Portable is provided by wikipedia

Macintosh Portable – General information

Macintosh Portable
Source: theregister.co.uk – Macintosh Portable
Overview
IntroducedSeptember 1989
DiscontinuedOctober 1991
Model Identifier10
Model NumberM5120 (Original)
M5126 (Backlit)
Price$6,500
$7,300 (witch optional hard drive)
ColorsPlatinum
Weight15.8 Ibs.
7.166 KG
Dimensions4.05” H x 15.25” W x 14.83” D
10.28 cm H x 38.73 cm W x 37.66 cm D
Hardware
Processor
ProcessorMotorola 68000
Processor Speed16 MHz
ArchitectureUnknown
Number of Cores1
System Bus16 MHz
Cache0.5 KB L1
CoprocessorNone
Storage & Media
StorageOptional 40 MB (Original) or 40 MB (Backlit)
Media1.44 MB Floppy
Memory
Built-in Memory1 MB
Maximum Memory9 MB (Original)
8 MB (Backlit)
Memory Slots1 – Portable
Minimum Speed100 ns
ROMUnknown
Interleaving SupportNo
Display
Built-in Display9.8″ diagonal active matrix reflective LCD
Resolutions640 x 400
Graphics
Graphics CardNone
Graphics MemoryNone
Display ConnectionDB-15
Expansion
Expansion SlotsModem
Hard Drive InterfaceSCSI
BaysUnknown
Software
Original OSSystem Software 6.0.4 (Original) or 6.0.7 (Backlit)
Maximum OSSystem 7.5.5
FirmwareMacintosh ROM
Connections
Wi-FiNone
EthernetNone
ModemOptional 2400 bps
BluetoothNone
ADB1
Serial2
SCSI1 – DB-25
Floppy Port1 – DB-19
Audio InNone
Audio Out1 – 3.5-mm stereo output jack
1 – Built-in speaker
InfraredNone
DisplayDB-15
Keyboard and trackpad
KeyboardBuilt-in keyboard
TrackpadBuilt-in trackball replaceable by optional keypad
Power
System BatterySealed lead-acid battery
Backup Battery9 V transistor battery
Maximum Continuous Power5 W
Line VoltageUnknown
Power AdapterUnknown
Related products

Source: Wikipedia, The Register, Apple

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