General Category > LisaList2

Lisa Tank Problem

<< < (17/26) > >>

compu_85:
I added your systems.

I still think there's some other problem with our estimates. Either the serial numbers didn't start with 0001 at the start of the day, or something else...

I'd think the "tank problem" math shouldn't be half of the serial number counts we've found.

I'm working on adding the math for this to the spreadsheet so it will be on the "Calculations" tab.

compu_85:
Thanks to those that kept adding to the "Incomplete Data" Tab. From the serial numbers I extracted the dates, then from the date & serial numbers I was able to calculate the AppleNets where there are other tracked systems from the same day. That added another 14 systems, up to 237 AppleNets tracked.

One of these, A4192128 was from the 192nd day in 84, when at least 701 Lisas were made (including one of mine!). Another was on the 187th day of 1984, when at least 853 were made! On the 157th day of 84, we have the serial number of the 2nd machine off the line, A4157002.

I also calculated the build date / sn from some of the disk image serial numbers - I felt it was safe to do this when the AppleNet was only a couple away. I added notes on any row where I calculated numbers.

I think there are a lot more AppleNet collisions than we realize.

Looking at the sheet, sorted by AppleNet, noice how the dates jump around. We have enough systems now that duplicates stand out. For example, AppleNet 106423. This AppleNet would've been used on date 4171 at the A factory, and also on date 4233 at the A factory. The Serial Number A4171064 would have a conflicting AppleNet with a machine at the System Source museum in MD, A4233316.

I'd say they were just "filling in" skipped over AppleNets, but the sequence matches on both sides.

-J

snuci:
Sorry, I didn't know this was a  serial number thread.

Here is mine.  Note, my Lisa 1 does not have a serial number label.  I think I translated this properly from the Service Mode screen.

B08B802020166
00100175
82020
1/5

B08B830760128
00100302
83076
2/5

B08B832310268
00103629
83231
2/5

A4156246
00103200
4156
2/10

A4158473
00104473
4158
2/10

A4300179
00107381
4300
2/20? (has the Sun Rem  20 MB hard drive)

blusnowkitty:

--- Quote from: snuci on August 02, 2023, 11:19:11 am ---A4300179
00107381
4300
2/20? (has the Sun Rem  20 MB hard drive)

--- End quote ---

By that point they probably would have been sold as Macintosh XLs, which were just 2/10s.

pintoguy:

--- Quote from: compu_85 on July 31, 2023, 08:01:50 pm ---I'd think the "tank problem" math shouldn't be half of the serial number counts we've found.

--- End quote ---

Right now, the estimate (tank problem) is a little over 11.6k, for ~237 counts, so not half. Or am I missing something ?  Also, I think there is a small mistake in cell C2 of the Calculation sheet (lowest Applenet number). It should be 25 and not 576. And by the way, the number we add to the highest Applenet number (C3/C4-1=46) for the estimate is not too different from this lowest Applenet number (25), which confirms we're not too far off.

Navigation

[0] Message Index

[#] Next page

[*] Previous page