Why no SOLVE & INTEGRATE commands on the 41C?

[Jake Schwartz]

(01-16-2020 08:58 AM)Didier Lachieze Wrote:  

(01-15-2020 07:20 PM)Jake Schwartz Wrote:  Hi Bob,

If you think about it, that would have obsoleted the 34C less than a month after introduction, since the 34C was introduced on July 1st and the 41C on July 16th :-)

Well, not really as the 34C was introduced one month after the 41C : the 34C was announced on August 15, 1979 along with the 33C and 38C (see PPC Journal - V6N5p2 – HP Status).

Yeah, I see that Volume 6 Number 5 of the PPC Journal mentions August 15th for the intro date of the 33C, 34C and 38C, including the HP press release on page 32. The intro dates of those three machines are listed as 7/1/79 on our HP Calendar which Richard Nelson and I did in 2007, which is probably based on a chart done for the 2000 conference in Los Angeles, showing machine intro dates. Also, Rick Furr's poster lists the 34C intro date as "7/79" there, and I suspect that he didn't have the same source as I. Further research will be needed to try to locate the source of that July-first date, out of curiosity.

Here is another tidbit- the first edition of the PPC Melbourne (Australia) group's newsletter, describing their meeting on August 27th, 1979 says on page 3 (under the heading of "New HP Calculators") the following:
"Since the meeting in August it has been found that HP had also released 3 other new machines in the States in July. The 33c and 38c are continuous memory versions of the 33E and 38E, while the 34c is a new (LED) scientific programmable wit many powerful programming features of the 41c, and continuous memory....."

Thanks,
Jake