PowerBook 140
Specifications
Table:
Component

140

145

145B

Processor:

Motorola 68030, running at 16 MHz

Motorola 68030, running at 25 MHz

Motorola 68030, running at 25 MHz

RAM:

2 MB on board, can be expanded to 8 MB

2 MB on board, can be expanded to 8 MB

4 MB on board, can be expanded to 8 MB

ROM:

1 MB

1 MB

1 MB

Hard disk:

20-80 MB

40-120 MB

40-120 MB

Floppy disk:

1.44 MB Superdrive

1.44 MB Superdrive

1.44 MB Superdrive

Systems supported:

System J-6.0.7.1, System 7.0.1-Mac OS 7.6.1

System J-6.0.7.1, System 7.0.1-Mac OS 7.6.1

System 7.1-Mac OS 7.6.1

ADB:

Yes (1 port)

Yes (1 port)

Yes (1 port)

Serial:

Yes (2 ports)

Yes (2 ports)

Yes (2 ports)

Modem:

optional (used for this model's expansion port)

optional (used for this model's expansion port)

optional (used for this model's expansion port)

Screen:

passive matrix, 1bpp 640×400

passive matrix, 1bpp 640×400

passive matrix, 1bpp 640×400

Examining the table that covers 'PowerBook 140' titled 'Specifications', write a one-sentence description of the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.