hp calculators
HP 10BII Using Memories
hp calculators - 2 - HP 10BII Using Memories - Version 1.0
Memories
The HP 10BII calculator has several storage areas called memories or registers that can be used to simplify solving
problems These memories hold a number for later use.
The M Register
The HP 10BII has a memory called the M register that is directly available from the basic keyboard. There are three keys
associated with the M register: RST.
The Rkey will store the number presently displayed into the M register. Note that this will overwrite any value
previously stored in the M register.
The Skey will recall the number presently in the M register to the display where it can be used.
The Tkey will add the number presently in the display to the number already in the M register. If pressed repeatedly,
it will add the number in the display to the number in the M register each time. This is often used to keep up with a
running total.
Numbered Registers
The HP 10BII also has 10 memories that are referenced by a number from 0 to 9. These memories are accessed using
two keys: Qand the yellow-shifted function Vq.
To store a number in the display into one of these memories, press Vqfollowed by a number from 0to 9.
Storing a number into a memory will overwrite the previous contents of the memory.
To recall a number from one of these memories to the display where it can be used, press Q followed by a number
from 0to 9.
Storage Arithmetic
The HP 10BII has the ability to perform arithmetic calculations on the values stored in the numbered memories. This is
done by pressing Vq, then one of the arithmetic keys, +-*/, and then a number between 0and 9.
For example, to multiply the contents of memory 8 by the number presently in the display, press Vq*8. The
examples will show ways this can be used.
Practice using memories to solve problems
Example 1: Solve
⎟
⎟
⎟
⎟
⎟
⎠
⎞
⎜
⎜
⎜
⎜
⎜
⎝
⎛
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛⎟
⎠
⎞
⎜
⎝
⎛
+
+
⎟
⎠
⎞
⎜
⎝
⎛
+
9
4
5
2
9
4
5
Solution: Since this expression has two terms that are exactly the same, we can compute the value of the expression
the first time, save it in a memory and then recall the value for use later in the calculation. Note that the
