[wp-34s] h.mmss number entry

[Dieter]

(03-31-2017 01:28 AM)ahagele Wrote:  I'm having difficulties entering numbers in the hh mm ss format.

The decimal to hhmm works fine with the H.MS function (e.g. 1.5 H.MS -> 1 30' 00"

This is just a display function for your convenience. It does not change the number in X at all. This is not a conversion function!

1.5 [f] [H.MS] => 1°30' 0,00"

Press [←] to clear the display and you'll see the original 1.5 again. Nothing has changed.

If you want to convert 1.5 hours to 1 h 30 minutes you have to use the conversion functions. These start with a [→], see below.

(03-31-2017 01:28 AM)ahagele Wrote:  However how do I enter 1 hr 30min?

Like on all calculators I know of, the format is hh.mmss. So you enter 1.30 or 1.3000.

(03-31-2017 01:28 AM)ahagele Wrote:  The H .dd does give me nothing useful. Assuming a format of hhhhmmss.dd would mean entering 13000.00 H .d -> shows 13000

Sure. Again: the format is not hhhhmmss.dd but hh.mmssdd – same as the good old 67 or 15C. The 34s has the conversion functions between h.ms and decimal hours directly on the keyboard. But you have to know how to handle them, so please read the manual. Here you use the "convert" key, the big right arrow [→] beside the [D] key. It works like this:

1.30 [→] [f] H.MS returns 1.5 hours
1.50 [→] [f] H.d   returns 1.30 (i.e. 1 h 30 minutes)

You can even briefly see the →H.MS and →HR function names appear in the display. They are the same as the ones on the keyboards of classic HPs.

(03-31-2017 01:28 AM)ahagele Wrote:  I just want a simple way to add time sheet data in the form of 1hr 15min + 3 hrs 35min + 2 hr 58min. Having the result back in hr and minutes.

Here you can use the dedicated H.MS+ and H.MS– commands. They are buried in the X.FCN menu. So once again: please read the manual. The 34s is an extremely capable and powerful device, but you have to know how to handle it.

Here is your example:

1.15 [ENTER] 3.35
[h] [X.FCN] ...scroll down to H.MS+ by pressing the letter H and [↓] [↓] [ENTER]

=> 4.5000

Add 2 h 58 min to this:
2.58 [h] [X.FCN] ...H.MS+ now shows up directly [ENTER]

=> 7.4800

Dieter