HP 12C:
Complex Arithmetic (Addition,
Multiplication, and Division)
Let A and B
represent the two complex numbers
A = R1 + R4*i
B = R2 + R5*i
Where i = √1
Store real
components in R1 and R2, and imaginary parts R4 and R5. Choose the arithmetic calculations:
Enter 0 for
addition: A + B
Enter 1 for multiplication: A * B
Enter 2 or
otherwise for division: A ÷ B
Result: C = R3 + R6*i
Program:
STEP

CODE

KEY

01

44, 0

STO 0

02

43, 35

X=0

03

43, 33, 09

GTO 09

04

1

1

05

30



06

43, 35

X=0

07

43, 33, 18

GTO 18

08

43, 33, 35

GTO 35

09

45, 1

RCL 1

10

45, 2

RCL 2

11

40

+

12

44, 3

STO 3

13

45, 4

RCL 4

14

45, 5

RCL 5

15

40

+

16

44, 6

RCL 6

17

43, 33, 63

GTO 63

18

45, 1

RCL 1

19

45, 2

RCL 2

20

20

*

21

45, 4

RCL 4

22

45, 5

RCL 5

23

20

*

24

30



25

44, 3

STO 3

26

45, 1

RCL 1

27

45, 5

RCL 5

28

20

*

29

45, 2

RCL 2

30

45, 4

RCL 4

31

20

*

32

40

+

33

44, 6

STO 6

34

43, 33, 63

GTO 63

35

45, 2

RCL 2

36

36

ENTER

37

20

*

38

45, 5

RCL 5

39

36

ENTER

40

20

*

41

40

+

42

44, 0

STO 0

43

45, 1

RCL 1

44

45, 2

RCL 2

45

20

*

46

45, 4

RCL 4

47

45, 5

RCL 5

48

20

*

49

40

+

50

45, 0

RCL 0

51

10

÷

52

44, 3

STO 3

53

45, 4

RCL 4

54

45, 2

RCL 2

55

20

*

56

45, 1

RCL 1

57

45, 5

RCL 5

58

20

*

59

30



60

45, 0

RCL 0

61

10

÷

62

44, 6

STO 6

63

45, 3

RCL 3

64

31

R/S

65

45, 6

RCL 6

66

43, 33, 00

GTO 00

Example:
A = 4.25 +
3.16*i, B = 2.27 + 1.04*i
Option 0
(+): 1.98 + 4.20*i
Option 1
(*): 12.93 – 2.75*i
Option 2 (÷):
1.02 – 1.86*i
Eddie
This blog is
property of Edward Shore, 2017
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