Apple
Apple Computer 1
Audio Guide
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The Apple Computer 1, originally released as the Apple Computer and known later as the Apple I or Apple-1, is an 8-bit desktop computer released by the Apple Computer Company (now Apple Inc.) in 1976. It was designed by Steve Wozniak. The idea of selling the computer came from Wozniak's friend and Apple co-founder Steve Jobs. The Apple I was Apple's first product, and to finance its creation, Wozniak sold his HP-65 calculator for $500 and Jobs sold a second hand VW Microbus, for a few hundred dollars (Wozniak later said that Jobs planned instead to use his bicycle to get around). Wozniak demonstrated the first prototype in July 1976 at the Homebrew Computer Club in Palo Alto, California.
Production was discontinued on September 30, 1977, after the June 10, 1977 introduction of its successor, the Apple II, which Byte magazine referred to as part of the "1977 Trinity" of personal computing (along with the PET 2001 from Commodore Business Machines and the TRS-80 Model I from Tandy Corporation).
Finally my version of APPLE I with all the possible Texas Instruments chips!
PSA DNA certified autograph !!!
One of the things purchased in the American market is this photo, signed by Steve Wozniak and certified by PSA/DNA.
This is one of the dreams, for us retrocomputer enthusiasts, sooner or later I'll assemble it!
Let's start with setting up a monitor for the Apple I
this is the pcb we use for assembly
Some considerations on the computer. Looking at the long side PCB, you will see numbers at the bottom, ranging from 1 to 18, the same goes for the left side, you will see letters ranging from A to D.The combination of the letters on the left and the numbers on the bottom form a nearly perfect grid on the PCB, this is widely used in documentation among hobbyists to identify chips or circuit parts.
In principle it can be divided into three parts, at the top right there is the power supply with the three large Blue capacitors, at the bottom all the components including the references A1 to A18 and B1 to B18, the computer with the micro, ram, prom, etc... Above all the components included by references C1 to C18 and D1 to D18, the video or terminal part. This section works independently, because in effect it is like a copy of a terminal or teletype. These terminals, or teleprinters, take ASCII characters and print them on the screen, or print them on paper.
Then the computer part (bottom part) takes the ASCII characters one at a time and sends them to the video (top part), to be displayed. The heart of the video comes down to the character ROM at position D2, which contains the BIT patterns for 64 characters. These are the only characters that APPLE 1 can display. The screen is 40 columns wide x 24 rows, for a total of 960 characters.
In this phase you can see the complete pcb of the components relating only to the video terminal part. The problems encountered were, a faulty LM323 (it went into protection when I inserted more than 5 chips), a faulty SN74174 (it blocked the reset), the faulty video output transistor (Chinese).
Here you can see how I fed the pcb the reset, of the video part, all random characters, then I gave a +5 volt on pin 13 of the keyboard.
Now it's time to insert all the remaining components, and connect a compatible keyboard. At this stage I only encountered a bad ram and a 7400 with a bent pin.
To do a little test, enter these lines of hexadecimal code:
0: A9 0 AA 20 EF FF E8 8A 4C 2 0 return
Type 0.A return in this way the memory locations with the hexadecimal values will be displayed
Type R return ( R means run the program)
Let's play with P-Lab Claudio's WiFi modem and Francesco's BBS
For configuration, follow the instructions on the P-Lab website
Insert the modem after configuring it for your WiFi network. Type the command C100R after resetting the computer. Check the connection to the previously configured wifi network. Type ATE1R command to get echo of typing.
Typing the command ATDT BBS.RETROCAMPUS.BBS:6502 will start the connection to Francesco's BBS.
Fiddling with the BBS menus.
We too have our own page on Francesco's BBS
To connect to our page type ATDT BBS.RETROCAMPUS.COM:9005
Here are some photos of the 2nd edition dedicated to Texas Instruments in the city of Rieti during the world chilli pepper fair, you can find the photos in the gallery!
The Apple IIc, the fourth model in the Apple II series of personal computers, is Apple Computer’s first endeavor to produce a portable computer. The result was a 7.5 lb (3.4 kg) notebook-sized version of the Apple II that could be transported from place to place. The c in the name stood for compact, referring to the fact it was essentially a complete Apple II computer setup (minus display and power supply) squeezed into a small notebook-sized housing. While sporting a built-in floppy drive and new rear peripheral expansion ports integrated onto the main logic board, it lacks the internal expansion slots and direct motherboard access of earlier Apple II models, making it a closed system like the Macintosh. However, that was the intended direction for this model — a more appliance-like machine, ready to use out of the box, requiring no technical know-how or experience to hook up and therefore attractive to first-time users.
The Apple IIe (styled as Apple //e) is the third model in the Apple II series of personal computers produced by Apple Computer. The e in the name stands for enhanced, referring to the fact that several popular features were now built-in that were formerly only available as upgrades or add-ons in earlier models. Improved expandability combined with the new features made for a very attractive general-purpose machine to first-time computer shoppers. As the last surviving model of the Apple II computer line before discontinuation, and having been manufactured and sold for nearly 11 years with relatively few changes, the IIe earned the distinction of being the longest-lived computer in Apple's history.
Apple Computer Lisa 2/10
Lisa Macintosh XL is a modified version of the Apple Lisa personal computer made by Apple Computer. In the Macintosh XL configuration, the computer shipped with MacWorks XL, a Lisa program that allowed 64 K Macintosh ROM emulation. An identical machine was previously sold as Lisa 2/10 with the Lisa OS only. Macintosh XL has a 400K 3.5" floppy drive and an internal 10 MB proprietary "Widget" hard drive with provision for an optional 5 or 10 MB external ProFile hard drive with the addition of a parallel interface card. The machine uses a Motorola 68000 CPU, clocked at 5 MHz together with 512 KB RAM. Macintosh XL was discontinued in April 1985.
TroubleShooting
We finally have a nice Apple Lisa too, this is the 2-10 model
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The first thing to do is check the power supply, in fact we have replaced all the filter capacitors in both low and high voltage
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after a general check of the capacitors of the various CPU, I/O and RAM cards and that there were no obvious faulty or corroded parts, we began testing all the power supplies available
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the main problem these machines suffer from is the breakdown of the boot EPROMs found on the CPU, in fact we have replaced them
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a general check was also carried out for the video and CRT part, to make it work we had to close the safety switches located under the front panel and the rear panel
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The Mac Mini (stylized as Mac mini) is a small form-factor desktop computer developed and marketed by Apple Inc, positioned betwees only consumer desktop computer since 2005 to ship without a display, a keyboard, and a mouse. The machine was initially branded it as BYODKM (Bring Your Own Display, Keyboard, and Mouse), as a deliberate strategic process to pitch users to switch from PC running other operating systems such as Microsoft Windows and Linux.
The original Mac Mini was introduced in January 2005 as a base model to PowerPC G4 architecture. Announced in February 2006, the second-generation lineup featured advanced components and numerous internal software updates. The third-generation, unveiled in June 2010, brought forth a thinner unibody aluminum case and an HDMI port, more readily positioning it as a home theater device alternative to the Apple TV.
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