Section 4: Additional Financial Functions  75 
 
File name: hp 12c pt_user's guide_English_HDPMF123E27  Page: 75 of 275   
Printed Date: 2005/8/1    Dimension: 14.8 cm x 21 cm 
 
Keystrokes Display  
500
ÞgK
 
–500.00 
Stores CF
1
 (with minus sign for a 
negative cash flow). 
4500
gK
 
4,500.00 
Stores CF
2
. 
5500
gK
 
5,500.00 
Stores CF
3
. 
4500
gK
 
4,500.00 
Stores CF
4
. 
130000
gK
 
130,000.00
Stores CF
5
. 
:n
 
5.00 
Checks number of cash flow amounts 
entered (in addition to CF
0
 ). 
13
¼
 
13.00 
Stores i. 
fl
 
212.18 
NPV. 
Since  NPV is positive, the investment would increase the financial value of the 
investor’s assets. 
Calculating 
NPV
 for Grouped Cash Flows.
 A maximum of 80 cash flow 
amounts (in addition to the initial investment CF
0
) can be stored in the hp 12c 
platinum.
*
  However, problems involving more than 80 cash flows can be handled 
if among the cash flows there are equal consecutive cash flows. For such problems, 
you merely enter along with the amounts of the cash flows the number of times — 
up to 99 — each amount occurs consecutively. This number is designated N
j
, 
corresponding to cash flow amount CF
j
, and is entered using the 
ga
 keys. Each 
N
j
 is stored in a special register inside the calculator.   
This method can, of course, be used for problems involving fewer than 80 cash 
flows — and it will require fewer storage registers than the method described 
above under Calculating NPV for Ungrouped Cash Flows. Equal consecutive cash 
flows  can be entered using that method — provided there are enough storage 
registers available to accommodate the total number of individual cash flows. The 
facility of grouping equal consecutive cash flows is provided to minimize the 
number of storage registers required. 
Note: When entering cash flow amounts — including the initial investment 
CF
0
 — remember to observe the cash flow sign convention by pressing Þ 
after keying in the amount for a negative cash flow. 
 
*
 If you have stored a program in the calculator, the number of registers available for storing 
cash flow amounts may be less than 81.