HP HP-28S - Page 146

A unit string can also represent a quotient of units, such as "m/sec".
However, the / symbol can't appear more than once. Be sure to group
all direct units before the / symbol and all inverse units after the /
symbol. For example, "feet per second per second" is represented by
"ft/sA2".
For
the next example, convert 1 mile per hour to feet per second.
Clear
the stack and enter the numerical value .
• 1 CLEAR I
1 1 ENTER I
Enter the unit for "miles per hour."
~----------------------~
[IT] mph 1 ENTER I 3:
2: 1
1: 'mph'
IiiDlIiBIIlDllrnaEBDlID
Key in the unit for "feet per second."
There is no built-in unit for "feet per second," so you'll use a unit
string .
• ~ [IT] ft IT] s
2:
1 :
1
'mph'
"ft / 51
IiiDlIiBIIlDllrnaEBDlID
Alpha entry mode was activated (as indicated by the form of the
cursor) when you began keying in the string. In alpha mode all com-
mands are written to the command line, so you'll need to press
1 ENTER I to complete the string.
1 ENTER I
3: 1
2: 'mph'
1: "ft / 5"
IiiDlIiBIIlDllrnaEBDlID
Convert the numerical value from the old units to the new units.
.1 CONVERT I
3:
2: 1.46666666667
1: "ft / 5"
IiiDlIiBIIlDllrnaEBDlID
The result shows that 1 mile per hour converts to 1.46666666667 feet
per second.
14: Unit Conversion 145