Re: HP-41 draws sine curve Message #19 Posted by Garth Wilson on 25 Mar 2010, 4:46 p.m., in response to message #18 by Egan Ford
The 41 is not very quick at any of the major factors here: calculating the SIN, probably doing some division and multiplication to scale it to the drawing size and maybe addition or subtraction for the drawing's offset, putting the text commands out, converting the number result to text, and then operating the IL which it only does at about 150 bytes per second (compared to the 71's 5,000 bytes per second). When I used the 41 for controlling equipment and printing out long lines of test results, synthetic programming sped up some of the printing operations because I could do things like embed escape sequences in quoted text. The 41 might also be inputting status from the plotter before every command, although there apparently is no danger of overrunning the plotter's input buffer!
Edited: 25 Mar 2010, 4:47 p.m.
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