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HP Scientific Calculators - Calculator Display Questions

Introduction
This document addresses display questions for the HP 6s / 6s solar, 20s, and 32sii calculators.
Calculator symbol key
The procedures in this document use the following text to represent symbol keys:
Key
Description
Text Representation
Right shift key
RS
Left-shift key
LS
colored key; shift key
SHIFT
Specifying the number of decimal places the calculator displays (20s, 32sii)
20s
Press LS, then FIX.
Enter desired number of places (0-9).
32sii
Press LS, then DISP.
Choose FIX.
Enter number of places up to 11. For 10 or 11 places enter [.] 0 or [.] 1.
Determining what "E" in a number (for example, 2.51E-13) means (20s, 32sii)
20s
Exponent of ten (for example, 2.51x10-13). Scientific and engineering notation express the number as a mantissa multiplied by a power of 10. The letter E separates the exponent from the mantissa.
Scientific Notation (SCI)
Scientific notation uses a mantissa with one digit to the left of the decimal point. Figure 1 shows the example of SCI 6:
Figure : SCI 6
  1. Press RS, then SCI.
  2. Enter the number of digits to appear after the decimal point.
Engineering Notation (ENG)
Engineering notation expresses a number as a mantissa with one, two, or three digits to the left of the decimal point, multiplied by 10 raised to a power that is a multiple of 3. Figure 2 shows the example of ENG 4:
Figure : ENG 4
To specify engineering notation:
  1. Press LS, then ENG.
  2. Enter the number of significant digits to appear after the first digit.
32sii
Exponent of ten (for example, 2.51x10-13). Scientific and engineering notation express the number as a mantissa multiplied by a power of 10. The letter E separates the exponent from the mantissa.
Scientific Notation (SCI)
Scientific notation uses a mantissa with one digit to the left of the decimal point. Figure 1 above shows the example of SCI 6.
To specify scientific notation:
  1. Press LS, then DISP.
  2. Choose SC.
  3. Enter number of places up to 11. For 10 or 11 places enter [.] 0 or [.] 1.
Engineering Notation (ENG)
Engineering notation expresses a number as a mantissa with one, two, or three digits to the left of the decimal point, multiplied by 10 raised to a power that is a multiple of 3. Figure 2 above shows the example of ENG 4.
To specify engineering notation:
  1. Press LS, then DISP.
  2. Choose EN.
  3. Enter number of places up to 11. For 10 or 11 places enter [.] 0 or [.] 1.
Determining what PEND in the display means (20s)
An arithmetic operation is pending (in progress).
Determining what [:] in the display means (20s)
INPUT has been pressed or two values have been returned.
Determining what a symbol in the display means (32sii)
This is an annunciator and it indicates something about the status of the calculator.
Getting the letter E out of the display (6s/6s solar)
The letter E in the display indicates an error has occurred. To remove the E press C/CE on the calculator.

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