Model: -10B General: Name: Business Calculator Code-Name: Ernst Family: Pioneer Logic: algebraic, no precedence Features: business Firsts: none Introduction: Date: 1989-1-3 Price: $49.95 Discontinuation: Date: 2000-? Price: ? Production-Run: ? Display: Type: LCD, 7-segment Size: 1 line x 12 chars Number-Formats: sign, 10 mantissa, ., exp sign, 2 exp Annunciators: ---^ shift active : input has been pressed PEND an operation is pending BEGIN begin mode battery battery low Data: User-Visible: Smallest: 1E-499 Largest: 9.99999999999E499 Signif.-Digits: 12 Internal: Smallest: 1E-49999 Largest: 9.99999999999999E49999 Signif.-Digits: 15 Data-Types-and-Sizes: real, 8 bytes Memory: Named-Registers: 2 line history, N, I/YR or NOM%, PV, PMT, FV, M, CST, PRC, MAR or MU, P/YR, EFF%, 0-9, .0-.4, K and operator Flags: none Register-Usage: R4 \GSn R5 \GSx R6 \GSy R7 \GSx^2 R8 \GSy^2 R9 \GSxy Numbered-Registers: 15 Program-Steps: none Program-Editing: none Program-Display: none User-RAM-Bytes: 216 Total-RAM-Bytes: 256 ROM-Bytes: 10K Machine-State: prefix key state pending operations (4 levels, not saved) display contrast display mode radix mark registers and history (not saved) begin/end 15 cash flow groups, 99 entries each File-Types: none Physical: Technology-Used: CMOS Processor: Bert, 640 KHz Chip-Count: ? Power-Source: 3 alkaline (Panasonic LR44) or mercury (Panasonic NR44 or MR44) button cells Continuous-Memory: yes Expansion-Ports: none I/O-Ports: none Clock: none (10 minute timeout) Length: ? Width: ? Height: ? Weight: ? Temperature-Range: Operating: 0 to 45 deg C Charging: - Storage: -20 to 65 deg C Keyboard: Switches: none Shift-Keys: gold, gold, above User-Defined-Keys: none Key-Arrangement:: ** ** ** ** ** ** ** ** ** ** ** ** ***** ** ** ** ** * ** ** ** ** ** * ** ** ** ** ** * ** ** ** ** ** * ** ** ** ** ** Key-Labels-Base-Keyboard:: N I/YR PV PMT FV \GS+ % RCL CFj CST-----PRC-----MAR INPUT ->M RM M+ <- +/- 7 8 9 \:- K 4 5 6 x  1 2 3 - C 0 . = + (The C key has a lower label of ON.) Key-Labels-gold-gold-above:: xP/YR NOM%----EFF%----P/YR AMORT \GS- %CHG STO Nj IRR/YR NPV MU CLEAR ALL CL\GS ( ) RND E x-,y- Sx,Sy \Gsx,\Gsy 1/x x SWAP x^,r y^,m x-,w y x  e LN n! \v/x 2 OFF BEG/END ./, DISP x Key-Labels-other::                   \GSx^2 \GSy^2 \GSxy   n \GSx \GSy            (Labels are in white and to the below right.) Programmable-Operations:: none Non-Programmable-Operations:: shift  clear shift % percent of %CHG percent change ( start nesting ) end nesting + addition +/- change sign - subtraction ->M store in memory ./, set radix mark 0-9, . enter digit or decimal point 1/x reciprocal <- erase character or number = complete the operation AMORT compute amortization BEG/END set begin/end mode C clear calculator line C + + adjust display contrast C + - adjust display contrast C + N + \GS+ menu key from left clear continuous memory C + PV reset calculator C + FV factory test, stop by C + PV C + PMT initiate one self-test CFj enter the next cash flow CLEAR ALL clear all registers CL\GS clear statistics registers CST store / compute cost DISP + = show all digits DISP . set ALL mode DISP 0-9 set FIX mode E start an exponent EFF% store / compute effective rate e^x natural exponential FV store / compute future value I/YR store / compute annual interest INPUT use number in line 1 as response IRR/YR compute IRR K constant arithmetic LN natural logarithm M+ add to memory MAR store / compute margin MU store / compute markup N store / compute N n! factorial Nj enter the next number of cash flows NOM% store / compute nominal percent NPV compute the net present value OFF off ON on P/YR store the number of payments per year PMT store / compute payment PRC store / compute price PV store / compute present value RCL 0 recall initial cash flow RCL 0-9,.0-.4 recall from register RCL CFj recall the next flow RCL Ng recall the number of times RCL name recall from register RM recall from memory RND round number to display STO +,-,x,\:- 0-9,.0-.4 storage arithmetic STO 0-9,.0-.4 store in register STO name store in menu variable SWAP swap displayed number with previous number Sx,Sy compute standard deviations x multiplication x-,w compute weighted average x-,y- compute averages xP/YR multiply by P/YR and store in N x^,r estimate x and correlation coefficient x^2 square y^,m estimate y and slope y^x power \:- division \GS+ add to statistics \GS- subtract from statistics \Gsx,\Gsy compute population standard deviation \v/x square root Menus:: none Bugs/ROM-Versions:: none Notes:: A giant step backwards: to old, -12C style cash flows, a constant (K) and "M" register. The AMORT and IRR functions compute to display precision accuracy. You can use INPUT and SWAP to keep two complete calculations going at once. Do the first one, press INPUT, then do your second one. Do SWAP to switch back and forth. Make sure that you have completed any pending operations first. Pressing C or turning the calculator off and on clears both.
I am Craig A. Finseth.
Last modified Saturday, 2012-02-25T17:29:16-06:00.