Full analysis of Apple Macintosh 128K
Exactly 30 years ago, the first Macintosh computer came out. The main difference of this computer was the presence of a graphical interface, the main manipulator was a mouse. This computer will forever remain in history thanks to its innovations in user and computer interaction. Thanks to the Apple Technology Museum , iFixit received the legendary Macintosh and will conduct a traditional analysis.
Want to see big photos? Click on the photos!
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At start this computer cost $ 2495. With modern money it is $ 5594 !
Compare how the Macintosh has changed in 30 years. The display of the first Mac was a black and white diagonal of 9 ”with a resolution of 512x342 pixels. Now we have a 21.5 ”display with a resolution of 1920 × 1080 pixels.
The modern Thunderbolt front end has a speed of 20 Gbps, but earlier a serial port was used and the speed was measured in thousands of bits. Only the power plug remains unchanged.
Over 30 years of progress, peripherals have changed significantly. The size has changed significantly and there are no wires.
When the graphical interface appeared, the arrows were removed from the keyboard so that users more often use the mouse.
With good tools, screws are easy to reach.
The back of the case is made of solid plastic. After removing it, we see the autographs of the developers: Steven Jobs, Woz, Bill Atkinson, Andy Hertzfeld, Bruce Horn, Jef Raskin others. Just like artists sign their paintings.
Face to face, past and present.
We continue to disassemble, inside also torx-screws.
As you can see, the largest PC board is the power supply. Surprisingly, its power is only 60 watts. The modern iMac 186 watts .
Bulky, heavy and lead-free CRT. Thanks to this display, the era of WYSIWYG has begun (“what you see is what you get”).
Even at that time, Apple was keeping an eye on the appearance of the internal components. The motherboard slides neatly out of the case. As you can see, there is no cooling. The Motorola 68000 processor was very popular and was used in the Sega Genesis , Commodore Amiga , Atari ST and in the TI-89 calculator.
Components on the board:
██ Motorola MC68000G8 Microprocessor
██ Fairchild Semiconductor 74LS393 Video Counter
██ Micron 4264 64 kb RAM (64 kb x 16 chips = 1024 kb, or 128 KB)
██ Simtek C19728 and C19729 32 KB ROM (32 KB x 2 ICs = 64 KB)
██ Simtek 344-0041-A " Integrated Woz Machine " Disk Controller
██ Zilog Z8530PS Serial Communications Controller
5.25 ”drives are in the past, we have a cutting-edge 3.5” drive from SONY.
The keyboard really can not figure out the keys soldered to the board.
The mouse inside has a fairly simple design .
As a result, Macintosh 128K gets 7 out of 10 points for maintainability, the more, the easier repair.
The main components simply replace. Nothing is glued, the clock battery can be replaced without disassembling the computer. Unfortunately, the RAM is soldered and there is no slot for the internal drive. However, the memory can be expanded by connecting an external drive. When repairing it is worth being careful with the kinescope: with improper analysis you can get an electric shock.
PS: Full-size wallpapers .
Want to see big photos? Click on the photos!
The following tools are required for parsing:
')
At start this computer cost $ 2495. With modern money it is $ 5594 !
Specifications
- 8 MHz Motorola 68000 processor
- 128 KB DRAM
- 9 "black and white CRT display running at 512 x 342 (72 dpi)
- 400 KB total 3.5-inch floppy disk drive
- Single-button mouse and hefty keyboard
Compare how the Macintosh has changed in 30 years. The display of the first Mac was a black and white diagonal of 9 ”with a resolution of 512x342 pixels. Now we have a 21.5 ”display with a resolution of 1920 × 1080 pixels.
The modern Thunderbolt front end has a speed of 20 Gbps, but earlier a serial port was used and the speed was measured in thousands of bits. Only the power plug remains unchanged.
Over 30 years of progress, peripherals have changed significantly. The size has changed significantly and there are no wires.
When the graphical interface appeared, the arrows were removed from the keyboard so that users more often use the mouse.
With good tools, screws are easy to reach.
The back of the case is made of solid plastic. After removing it, we see the autographs of the developers: Steven Jobs, Woz, Bill Atkinson, Andy Hertzfeld, Bruce Horn, Jef Raskin others. Just like artists sign their paintings.
Face to face, past and present.
We continue to disassemble, inside also torx-screws.
As you can see, the largest PC board is the power supply. Surprisingly, its power is only 60 watts. The modern iMac 186 watts .
Bulky, heavy and lead-free CRT. Thanks to this display, the era of WYSIWYG has begun (“what you see is what you get”).
Even at that time, Apple was keeping an eye on the appearance of the internal components. The motherboard slides neatly out of the case. As you can see, there is no cooling. The Motorola 68000 processor was very popular and was used in the Sega Genesis , Commodore Amiga , Atari ST and in the TI-89 calculator.
Components on the board:
██ Motorola MC68000G8 Microprocessor
██ Fairchild Semiconductor 74LS393 Video Counter
██ Micron 4264 64 kb RAM (64 kb x 16 chips = 1024 kb, or 128 KB)
██ Simtek C19728 and C19729 32 KB ROM (32 KB x 2 ICs = 64 KB)
██ Simtek 344-0041-A " Integrated Woz Machine " Disk Controller
██ Zilog Z8530PS Serial Communications Controller
5.25 ”drives are in the past, we have a cutting-edge 3.5” drive from SONY.
The keyboard really can not figure out the keys soldered to the board.
The mouse inside has a fairly simple design .
As a result, Macintosh 128K gets 7 out of 10 points for maintainability, the more, the easier repair.
The main components simply replace. Nothing is glued, the clock battery can be replaced without disassembling the computer. Unfortunately, the RAM is soldered and there is no slot for the internal drive. However, the memory can be expanded by connecting an external drive. When repairing it is worth being careful with the kinescope: with improper analysis you can get an electric shock.
PS: Full-size wallpapers .
Source: https://habr.com/ru/post/211122/
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