Computer sales records
Hello SIGCIS, I've been emailing back and forth with Allan and David, and we appear to have converged on a sense that a 400 lb roll might plausibly been around 4 feet in diameter and that photos of the SSEC show space for rolls of at least 3 feet in diameter, maybe as much as 4. So I am inclined to credit the testimony of Grosch as being at most a small exaggeration. If you look at one of the classic SSEC images at http://www.columbia.edu/cu/computinghistory/ssec.html, the tape rolls are the three large round things at the top of the machine on the back wall. Each punch was directly above 10 tape readers, and it appears that the tape emerging from the punch could be threaded through all 10 readers to create a buffer memory with 10 chances to read each piece of data. So with that and the hard drive platter taken care of, here is my next batch of candidate records. I am trying a "power of 10" approach to computer sales (or in the early days, leasing) records with the first machine to hit each milestone. This has the advantage that I don't need to try to figure out exactly with of the many estimates of CBM 64 and iPhone 6 sales are accurate, just satisfy myself that they were the first to exceed the threshold. Installed base in excess of. first achieved by. during sales years. 10 IBM 701 1952-1954 100 Probably IBM 650 1954-1962 1,000 IBM 650 1954-1962 10,000 IBM 1401 1959-1971 100,000 TRS-80 Model 1 1977-1980 1,000,000 CBM VIC 20 1981-1985 10,000,000 CBM 64 1982-1994 100,000,000 Apple iPhone 6 2014-2018 Points of possible uncertainty: 1: was the IBM 650 the first to 100 as well as to 1,000? Seems likely. 2: At the time that Commodore claimed the VIC 20 as the first million selling computer, claims were also made for the ZX81 as the first computer to sell a million. If anyone wants to make a case for Sinclair I will listen. 3: In case any Apple fans are about to speak up, re the idea that the TRS-80 was first to sell 100K, let me explain my logic preemptively. I am going from a combination of this advertisement from Computer World 18 Oct, 1979 celebrating 100,000 sold: https://books.google.com.au/books?id=UaKuzwnEiRMC <https://books.google.com.au/books?id=UaKuzwnEiRMC&printsec=frontcover&sourc e=gbs_ge_summary_r&cad=0#v=onepage&q&f=false> &printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false and these plausible seeming estimates of Apple II sales by model (https://retrocomputing.stackexchange.com/questions/459/over-its-lifetime-ho w-many-apple-ii-computers-were-sold), which suggest only 65K sales of the original Apple II. As Radio Shack must have written the copy somewhat prior to the magazine date, say in mid-September it is had to imagine that the Apple II Plus, introduced in June 1979, sold 35K in its first three months to make up the difference (actually more than 35K sales would be needed, to cover however many of the original model were sold between Sept 1979 and its withdrawal in 1981). Apple II sales did not peak until well into the 1980s, so although the Apple IIe eventually sold millions I believe the VIC 20 got to the one million milestone first. Best wishes, Tom
Yes and Yes on the IBM 650, Leases and sales (sales usually means purchase in business language) may be better replaced with your other term, installations, which is the word widely used in the industry at the time, largely by vendors. Hope this is of help. Jim On Tue, Sep 22, 2020 at 5:20 PM <thomas.haigh@gmail.com> wrote:
Hello SIGCIS,
I’ve been emailing back and forth with Allan and David, and we appear to have converged on a sense that a 400 lb roll might plausibly been around 4 feet in diameter and that photos of the SSEC show space for rolls of at least 3 feet in diameter, maybe as much as 4. So I am inclined to credit the testimony of Grosch as being at most a small exaggeration. If you look at one of the classic SSEC images at http://www.columbia.edu/cu/computinghistory/ssec.html, the tape rolls are the three large round things at the top of the machine on the back wall. Each punch was directly above 10 tape readers, and it appears that the tape emerging from the punch could be threaded through all 10 readers to create a buffer memory with 10 chances to read each piece of data.
So with that and the hard drive platter taken care of, here is my next batch of candidate records. I am trying a “power of 10” approach to computer sales (or in the early days, leasing) records with the first machine to hit each milestone. This has the advantage that I don’t need to try to figure out exactly with of the many estimates of CBM 64 and iPhone 6 sales are accurate, just satisfy myself that they were the first to exceed the threshold.
Installed base in excess of…
first achieved by…
during sales years.
10
IBM 701
1952-1954
100
Probably IBM 650
1954-1962
1,000
IBM 650
1954-1962
10,000
IBM 1401
1959-1971
100,000
TRS-80 Model 1
1977-1980
1,000,000
CBM VIC 20
1981-1985
10,000,000
CBM 64
1982-1994
100,000,000
Apple iPhone 6
2014-2018
Points of possible uncertainty:
1: was the IBM 650 the first to 100 as well as to 1,000? Seems likely.
2: At the time that Commodore claimed the VIC 20 as the first million selling computer, claims were also made for the ZX81 as the first computer to sell a million. If anyone wants to make a case for Sinclair I will listen.
3: In case any Apple fans are about to speak up, re the idea that the TRS-80 was first to sell 100K, let me explain my logic preemptively. I am going from a combination of this advertisement from Computer World 18 Oct, 1979 celebrating 100,000 sold: https://books.google.com.au/books?id=UaKuzwnEiRMC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false and these plausible seeming estimates of Apple II sales by model ( https://retrocomputing.stackexchange.com/questions/459/over-its-lifetime-how...), which suggest only 65K sales of the original Apple II. As Radio Shack must have written the copy somewhat prior to the magazine date, say in mid-September it is had to imagine that the Apple II Plus, introduced in June 1979, sold 35K in its first three months to make up the difference (actually more than 35K sales would be needed, to cover however many of the original model were sold between Sept 1979 and its withdrawal in 1981). Apple II sales did not peak until well into the 1980s, so although the Apple IIe eventually sold millions I believe the VIC 20 got to the one million milestone first.
Best wishes,
Tom _______________________________________________ This email is relayed from members at sigcis.org, the email discussion list of SHOT SIGCIS. Opinions expressed here are those of the member posting and are not reviewed, edited, or endorsed by SIGCIS. The list archives are at http://lists.sigcis.org/pipermail/members-sigcis.org/ and you can change your subscription options at http://lists.sigcis.org/listinfo.cgi/members-sigcis.org
-- James W. Cortada Senior Research Fellow Charles Babbage Institute University of Minnesota jcortada@umn.edu 608-274-6382
Tom, At the risk of getting lost in the weeds of "what is a computer", there is probably a case to be made that the Card Programmed Calculator as the first computer to have more than 100 sales/installations/rentals (and more than 10). A quick check of IBM archives tells me it had 20 installations in 1949 when it was inaugrated and 700 by the mid-50s. However there were at least two versions of the CPC and it is arguably a calculator and not a computer. It was programmable enough that things such as an arrangement to make it handle floating point were widely shared, on the other hand I get the sense some plugging was involved and it and limited programming flexibility. Someone who actually knows the nitty gritty of control for it and cares about a strict definition of what is or isn't a computer would probably be better qualified then me to judge the case. The sales numbers are clear the "computer" part very unclear. -- Yours Truly, Allan Olley, PhD http://individual.utoronto.ca/fofound/ On Tue, 22 Sep 2020, thomas.haigh@gmail.com wrote:
Hello SIGCIS,
I’ve been emailing back and forth with Allan and David, and we appear to have converged on a sense that a 400 lb roll might plausibly been around 4 feet in diameter and that photos of the SSEC show space for rolls of at least 3 feet in diameter, maybe as much as 4. So I am inclined to credit the testimony of Grosch as being at most a small exaggeration. If you look at one of the classic SSEC images at http://www.columbia.edu/cu/computinghistory/ssec.html, the tape rolls are the three large round things at the top of the machine on the back wall. Each punch was directly above 10 tape readers, and it appears that the tape emerging from the punch could be threaded through all 10 readers to create a buffer memory with 10 chances to read each piece of data.
So with that and the hard drive platter taken care of, here is my next batch of candidate records. I am trying a “power of 10” approach to computer sales (or in the early days, leasing) records with the first machine to hit each milestone. This has the advantage that I don’t need to try to figure out exactly with of the many estimates of CBM 64 and iPhone 6 sales are accurate, just satisfy myself that they were the first to exceed the threshold.
Installed base in excess of…
first achieved by…
during sales years.
10
IBM 701
1952-1954
100
Probably IBM 650
1954-1962
1,000
IBM 650
1954-1962
10,000
IBM 1401
1959-1971
100,000
TRS-80 Model 1
1977-1980
1,000,000
CBM VIC 20
1981-1985
10,000,000
CBM 64
1982-1994
100,000,000
Apple iPhone 6
2014-2018
Points of possible uncertainty:
1: was the IBM 650 the first to 100 as well as to 1,000? Seems likely.
2: At the time that Commodore claimed the VIC 20 as the first million selling computer, claims were also made for the ZX81 as the first computer to sell a million. If anyone wants to make a case for Sinclair I will listen.
3: In case any Apple fans are about to speak up, re the idea that the TRS-80 was first to sell 100K, let me explain my logic preemptively. I am going from a combination of this advertisement from Computer World 18 Oct, 1979 celebrating 100,000 sold:https://books.google.com.au/books?id=UaKuzwnEiRMC&printsec=frontcover&source=gbs_ge_ summary_r&cad=0#v=onepage&q&f=false and these plausible seeming estimates of Apple II sales by model(https://retrocomputing.stackexchange.com/questions/459/over-its-lifetime-how... pple-ii-computers-were-sold), which suggest only 65K sales of the original Apple II. As Radio Shack must have written the copy somewhat prior to the magazine date, say in mid-September it is had to imagine that the Apple II Plus, introduced in June 1979, sold 35K in its first three months to make up the difference (actually more than 35K sales would be needed, to cover however many of the original model were sold between Sept 1979 and its withdrawal in 1981). Apple II sales did not peak until well into the 1980s, so although the Apple IIe eventually sold millions I believe the VIC 20 got to the one million milestone first.
Best wishes,
Tom
Thomas, Your table "begs" for an entry with an installed base of 1. Earlier today I posted re: the ABC computer which was "built at Iowa State University (then called Iowa State College) from 1937 to 1942" - do you want to have that perhaps be the very first entry? Brian Berg On Tue, Sep 22, 2020 at 5:47 PM Allan Olley <allan.olley@utoronto.ca> wrote:
Tom, At the risk of getting lost in the weeds of "what is a computer", there is probably a case to be made that the Card Programmed Calculator as the first computer to have more than 100 sales/installations/rentals (and more than 10). A quick check of IBM archives tells me it had 20 installations in 1949 when it was inaugrated and 700 by the mid-50s. However there were at least two versions of the CPC and it is arguably a calculator and not a computer. It was programmable enough that things such as an arrangement to make it handle floating point were widely shared, on the other hand I get the sense some plugging was involved and it and limited programming flexibility. Someone who actually knows the nitty gritty of control for it and cares about a strict definition of what is or isn't a computer would probably be better qualified then me to judge the case. The sales numbers are clear the "computer" part very unclear.
-- Yours Truly, Allan Olley, PhD
http://individual.utoronto.ca/fofound/
On Tue, 22 Sep 2020, thomas.haigh@gmail.com wrote:
Hello SIGCIS,
I’ve been emailing back and forth with Allan and David, and we appear to
converged on a sense that a 400 lb roll might plausibly been around 4 feet in diameter and that photos of the SSEC show space for rolls of at least 3 feet in diameter, maybe as much as 4. So I am inclined to credit the testimony of Grosch as being at most a small exaggeration. If you look at one of the classic SSEC images at http://www.columbia.edu/cu/computinghistory/ssec.html, the tape rolls are the three large round things at the top of the machine on the back wall. Each
directly above 10 tape readers, and it appears that the tape emerging from the punch could be threaded through all 10 readers to create a buffer memory with 10 chances to read each piece of data.
So with that and the hard drive platter taken care of, here is my next batch of candidate records. I am trying a “power of 10” approach to computer sales (or in the early days, leasing) records with the first machine to hit each milestone. This has the advantage that I don’t need to try to figure out exactly with of the many estimates of CBM 64 and iPhone 6 sales are accurate, just satisfy myself
were the first to exceed the threshold.
Installed base in excess of…
first achieved by…
during sales years.
10
IBM 701
1952-1954
100
Probably IBM 650
1954-1962
1,000
IBM 650
1954-1962
10,000
IBM 1401
1959-1971
100,000
TRS-80 Model 1
1977-1980
1,000,000
CBM VIC 20
1981-1985
10,000,000
CBM 64
1982-1994
100,000,000
Apple iPhone 6
2014-2018
Points of possible uncertainty:
1: was the IBM 650 the first to 100 as well as to 1,000? Seems likely.
2: At the time that Commodore claimed the VIC 20 as the first million selling computer, claims were also made for the ZX81 as the first computer to sell a million. If anyone wants to make a case for Sinclair I will listen.
3: In case any Apple fans are about to speak up, re the idea that the TRS-80 was first to sell 100K, let me explain my logic preemptively. I am going from a combination of this advertisement from Computer World 18 Oct, 1979 celebrating 100,000 sold: https://books.google.com.au/books?id=UaKuzwnEiRMC&printsec=frontcover&source=gbs_ge_ summary_r&cad=0#v=onepage&q&f=false and these plausible seeming estimates of Apple II sales by model( https://retrocomputing.stackexchange.com/questions/459/over-its-lifetime-how... pple-ii-computers-were-sold), which suggest only 65K sales of the original Apple II. As Radio Shack must have written the copy somewhat prior to the magazine date, say in mid-September it is had to imagine that the Apple II Plus, introduced in June 1979, sold 35K in its first three months to make up the difference (actually more than 35K sales would be needed, to cover however many of the original model were sold between Sept 1979 and its withdrawal in 1981). Apple II sales did not peak until well into the 1980s, so although the Apple IIe eventually sold millions I believe
got to the one million milestone first.
Best wishes,
Tom
_______________________________________________ This email is relayed from members at sigcis.org, the email discussion
have punch was that they the VIC 20 list of SHOT SIGCIS. Opinions expressed here are those of the member posting and are not reviewed, edited, or endorsed by SIGCIS. The list archives are at http://lists.sigcis.org/pipermail/members-sigcis.org/ and you can change your subscription options at http://lists.sigcis.org/listinfo.cgi/members-sigcis.org
participants (4)
-
Allan Olley -
Brian Berg -
James Cortada -
thomas.haigh＠gmail.com