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  1. Replies
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    Amortization, 12-19-20 There are many...

    Amortization, 12-19-20

    There are many amortization calculators online. I thought it would be nice to have a quick amortization program for my TI-74. If you punch it in check it out completely with...
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    You are very welcome, Ksarul Resistor,...

    You are very welcome, Ksarul

    Resistor, 11-28-20

    My brother wrote this resistor calculating program for his Color Computer. I converted it to the TI-74. It calculates as high as 99 M OHMS. I...
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    Memory, 11-11-20 As you get older they say you...

    Memory, 11-11-20

    As you get older they say you should 'exercise' your memory. This program allows you to enter items you wish to try to remember on program lines 1 to 97. Enter the line number,...
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    PR-RP, 11-5-20 As far as I know, you can't...

    PR-RP, 11-5-20

    As far as I know, you can't pass variables between the Calculator and Basic modes. So I stripped out the rectangular to polar/polar to rectangular section from the RPN program to...
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    Vectors, 2-20-20 I could find a single...

    Vectors, 2-20-20

    I could find a single magnitude and angle using [P>R] in calc mode. I wrote this program to find the resultant of a number of vectors. All angles are in degrees decimal (dd). On a...
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    Ohm DC, 1-22-2020 I wanted to be able to work...

    Ohm DC, 1-22-2020

    I wanted to be able to work a list of formulas directly. I put the formulas in DATA statements. With the [+] [-] keys I can scroll up and down the formula list. When I find a...
  7. Replies
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    Stat, 12-15-19 Edit: I can only edit a short...

    Stat, 12-15-19 Edit:

    I can only edit a short time after I post. I was looking over the Stat program and I see I was a little redundant. You can reduce the repetitive math by replacing these lines...
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    Stat, 12-15-19 My granddaughter was showing me...

    Stat, 12-15-19

    My granddaughter was showing me how to use/do paired statistics. She had her TI-84 and I had my TI-74 in Calc Mode trying to keep up with her. In Calc Mode I haven't found a way to...
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    Combined Gas Law, 11-4-19 On one of my old...

    Combined Gas Law, 11-4-19

    On one of my old cars I want to increase the pressure in my copper radiator and raise the boiling point of the coolant. Using water as the coolant, what temperature would...
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    Parabola, 8-20-19 I have some left-over thin...

    Parabola, 8-20-19

    I have some left-over thin aluminum roofing flashing. I want to see if I can make a parabolic solar cooker that would grill a hamburger. I need to figure and trace out 1/2 of a...
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    Heat Index, 7-3-19 Summer is here. Since...

    Heat Index, 7-3-19

    Summer is here. Since temperature and humidity will vary from location to location, I decided to make a Heat Index program for my Ti-74 that I could use as I'm traveling and...
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    Right Triangle edit: 5-17-19 To be sure you're...

    Right Triangle edit: 5-17-19

    To be sure you're in degree mode put DEG at the beginning of 14000:

    14000 DEG:PRINT "Right Triangle":PAUSE .6:RESTORE 14400:ON ERROR 14490

    For labeling, x y...
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    Right Triangle, 5-17-19 I like playing with...

    Right Triangle, 5-17-19

    I like playing with old cars. I needed something more flexible than P>R and R>P for suspension geometry and body angles. I made this program for my ti74 that works a right...
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    Calories Burned Cycling, corrections, 4-4-19 I...

    Calories Burned Cycling, corrections, 4-4-19

    I found some errors. Change:

    1540 IF CW$="k"THEN WT=W:GOTO 1560

    1570 IF MT$="v"THEN 1600
    1575 IF MT$="m"THEN 1590

    The Kgs example result:...
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    Calories Burned Cycling, 4-3-19 Now that the...

    Calories Burned Cycling, 4-3-19

    Now that the weather's warmer, I'm back on my bicycle. If I didn't ride my bicycle I'd probably not excercise at all. I vary my ride frequently and often wonder how...
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    Simpson's Rule, 3-2-19 I found this website...

    Simpson's Rule, 3-2-19

    I found this website that calculated the volume of an American football with a definite integral.

    https://www.math.ucdavis.edu/~morris/16B/sec5.7.pdf

    As I've said...
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    Wind Chill, 1-25-19 Sometimes the weather...

    Wind Chill, 1-25-19

    Sometimes the weather report doesn't give the wind chill. Sometimes my local weather conditions differ from the weather report. When it's really cold outside I like to know the...
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    Conversions, 1-4-19 I thought it would be nice...

    Conversions, 1-4-19

    I thought it would be nice to have a package of my own frequently used conversions. The layout 'mi>km', miles to kilometers, made sense to me. The number 1.6093 multiplied by...
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    On the Dec Bin Hex program I found an error...

    On the Dec Bin Hex program I found an error today. (I can only edit up to 15 mins after I post). Line 9820 reads:

    9820 IF CT<6 THEN GOSUB 9900 ELSE Z8$=F9$:RETURN

    It should be:

    9820 IF CT<6...
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    Bin Dec Hex, 11-28-18 I was given an old...

    Bin Dec Hex, 11-28-18


    I was given an old Tandy Color Computer. While playing around with it I decided I needed something to convert from binary to decimal to hex. I found these bin-dec-hex...
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    Drive Ratio, 11-10-18 My grandson was setting...

    Drive Ratio, 11-10-18

    My grandson was setting up his drive train on his air-cooled VW Bug. Since his cooling is tied to engine rpm/fan he wanted to know what his setup would be doing. I made this...
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    Unit-Unit, 10-30-18 I'm not very good at math....

    Unit-Unit, 10-30-18

    I'm not very good at math. Every now and then I play with electronics. Here's a program I wrote for the TI-74 that converts the value from one unit to another. The conversion...
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    *****

    *****
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    Recently I decided to build a small stationary...

    Recently I decided to build a small stationary steam engine for entertainment. Not being a professional machinist or engineer, I needed to figure out how to determine and make a small eccentric cam...
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    I made this small RPN style calculator mainly to...

    I made this small RPN style calculator mainly to work on my old car's suspension using a polar to rectangular(pr) and a rectangular to polar(rp) routine in Basic. I find it helpful to roll over or...
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