HP-41 Programming



#9

I've always done my programming on either an HP-42 or HP-1x series calculator an am slightly stuch trying to port a simple program to my HP-41CX.

How does one enter a conditional test such as X<Y? where it's not one that's accessible from the keyboard? I can see it in the catalog and could enter it in ALPHA mode but need the '<' symbol.

I suspect I'm missing something really simple.


#10

Quote:
How does one enter a conditional test such as X<Y? where it's not one that's accessible from the keyboard? I can see it in the catalog and could enter it in ALPHA mode but need the '<' symbol.

Look at the plaque on the back of the calculator to see the characters associated with shifted alpha keys. '<' is on COS. Then enter the command via XEQ ALPHA.


- Pauli


#11

I was missing something really simple then.

Cheers.

#12

I remember picking up my first HP41C for university in 1980. Left the manuals in the shrink wrap and started pounding away.

Found I could not create the commands using alpha as I was not used to a catalog of commands nor the requirement to create them!

I undid the shrink wrap ;-)

Cheers Geoff


#13

Geoff,

The announcement of the HP-41C made it in USA Today in July 1979. I remember being in southern CA and looking at the yellow pages to find the nearest calculator dealer--EduCalc (surprise surprise). I drove there and asked about the 41C. They said they did ot have any yet, but they had the manuals. I don't remember if I bought one or borrowed it (with a deposit). I came back to our summer apartment and sat down reading the manual and becoming amazed at the new features of the 41C. Reading the manual made it very easy to work the machine which I obtained early September in Ann Arbor, MI, where I was studying.

Namir

Edited: 2 May 2011, 1:42 p.m.


#14

How cool that one could borrow the manual of an upcoming product back then.


#15

Today that would prevent buying stuff that's not well engineered.

at least for the guy who is a "manual reader" (like me ;-)

#16

Hello Namir!

I was having a cinnamon bun at the University coffee shop (1980 fall) before classes, around 7am. The guy beside me was playing with this HP LCD calculator. I pulled out my hp 25 and he proceded to expound on the capabilities of this new HP-41C.

I think I was most impressed with the Star Trek game he had installed. THAT convinced me to trade in the HP 25 (sold to a fellow student) as I was tired with the lunar landing simulator on the 25.

;-)


Edited: 3 May 2011, 11:34 a.m. after one or more responses were posted


#17

You made a very wise choice!!!

:-)

Namir


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