HP 15C: Binary to
Decimal Conversion
Input: A number in
binary form. Maximum value: 1 111 111
111 (1,023 in decimal).
Registers used:
R0 = number in binary
R1 = number in decimal
R2 = counter
I have this program under label C.
Program:
Step

Key

Key Code

001

LBL C

42, 21, 13

002

STO 0

44, 0

003

LOG

43, 13

004

INT

43, 44

005

1

1

006

+

40

007

3

3

008

10^X

13

009

÷

10

010

STO 2

44, 2

011

0

0

012

STO 1

44, 1

013

LBL 3

42, 21, 3

014

RCL 0

45, 0

015

RCL 2

45, 2

016

INT

43, 44

017

1

1

018

+

40

019

10^X

13

020

÷

10

021

FRAC

42, 44

022

1

1

023

0

0

024

*

20

025

INT

43, 44

026

2

2

027

ENTER

36

028

RCL 2

45, 2

029

INT

43, 44

030

Y^X

14

031

*

20

032

STO+ 1

44, 40, 1

033

ISG 2

42, 6, 2

034

GTO 3

22, 3

035

RCL 1

45, 1

(Line 006 was corrected, the key code should be 40, not 10. Much thanks and appreciation to Torben Fuglsang for pointing this out to me.)
Examples:
Binary: 1101, Decimal: 13
Binary: 10101, Decimal: 42
This blog is property of Edward Shore. 2016
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