Citizen SR-281 User Manual Download Page 26

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-E26-

1 1 0 1 0 0 1 1

DEG BIN

Indicates total blocks : 1 block

Indicates Block 1 presently displayed

Indicates Block 2 presently displayed

Indicates Block 3 presently displayed

Indicates Block 4 presently displayed

Indicates total blocks : 2 blocks

Indicates total blocks : 3 blocks

Indicates total blocks : 4 blocks

The block function comprises upper and lower block indicators. The
upper indicator means current block position, and the lower indicator
means total blocks for a result.

In the binary base, the block 1 is displayed immediately after
calculation. Other blocks ( block 2 ~ block 4 ) are displayed by
pressing [

For example, input 47577557

Press [ 2nd ] [ HEX ] 47577557

[ 2nd ] [ BIN ]

0 1 0 1 0 1 1 1

DEG BIN

– –

Indicates Block 1 presently displayed

[

]

0 1 1 1 0 1 0 1

DEG BIN

–

Indicates Block 2 presently displayed

[

]

0 1 0 1 0 1 1 1

DEG BIN

– –

Indicates Block 3 presently displayed

[

]

0 1 0 0 0 1 1 1

DEG BIN

– – –

Indicates Block 4 presently displayed

47577557

= Block 4 + Block 3 + Block 2 + Block 1

= 01000111010101110111010101010111

Summary of Contents for SR-281

Page 1: ...calculation 11 Display notations 11 Scientific Functional Calculations 13 Logarithms and Antilogarithms 13 Fraction calculation 13 Angle unit conversions 14 Sexagesimal Decimal transformation 15 Trigo...

Page 2: ...ry compartment cover and press ON C Auto power off function This calculator automatically turns it off when not operated for approximately 6 9 minutes It can be reactivated by pressing ON C key and th...

Page 3: ...display to indicate you the current status of the calculator Indicator Meaning M Running memory Result is negative E Error STO Storing variable mode is active RCL Recalling variable mode is active 2n...

Page 4: ...s MODE and then key in directly the number of the mode 2 to enter the desired mode immediately Using 2nd Keys When you press 2nd the 2nd indicator shown in the display is to tell you that you will be...

Page 5: ...nd with the cursor located at the space following the last character You can continue moving the cursor by or 2nd and editing values or commands for subsequent execution Memory calculation Memory vari...

Page 6: ...order to replace the content of the memory with the displayed number please press X M key To clear the content of running memory you can press 0 X M CE X M or 0 STO M in sequence 3 x 5 56 7 74 8 x 7 4...

Page 7: ...8 nPr nCr 9 x 10 11 AND NAND only Base n mode 12 OR XOR XNOR only Base n mode Accuracy and Capacity Output digits Up to 12 digits Calculating digits Up to 14 digits In general every reasonable calcul...

Page 8: ...10 100 x 0 3 x x 1 x 10 100 X 0 x 69 x is an integer R P 2 2 y x 1 x 10 100 P R 0 r 1 x 10 100 Deg 4 5 x 10 10 deg Rad 2 5 x 10 8 rad Grad 5 x 10 10 grad however for tan x Deg 90 2n 1 Rad 2 2n 1 Grad...

Page 9: ...11111111111111111111111111111111 for negative OCT 0 X 17777777777 for zero or positive 20000000000 X 37777777777 for negative HEX 0 X 7FFFFFFF for zero or positive 80000000 X FFFFFFFF for negative Er...

Page 10: ...0612720 6 90368061272 x 10 12 DEG 1 2 3 6 9 7 5 3 2 7 12369 x 7532 x 74103 6 9 0 3 6 8 0 6 1 2 7 2 12 Parentheses calculations Operations inside parentheses are always executed first SR 281 SR 282 can...

Page 11: ...the display value Fixed point Floating Notations To specify the number of decimal places press 2nd TAB and then a value indicating the number of places 0 9 Values are displayed rounded off to the pla...

Page 12: ...ith the corresponding engineering symbol Y yotta 10 24 Z zetta 10 21 E exa 10 18 P peta 10 15 T tera 10 12 G giga 10 9 M mega 10 6 K kilo 10 3 m milli 10 3 micro 10 6 n nano 10 9 p pico 10 12 f femto...

Page 13: ...play is as follow 5 12 Display of 12 5 56 5 12 Display of 56 12 5 Note Values are automatically displayed in decimal format whenever the total number of digits of a fractional values integer numerator...

Page 14: ...decimal format 55 12 75 3 5 4 8 DEG 8 4 5 3 7 5 8 a b c 4 a b c 5 3 75 1 2 5 5 Angle unit conversions The calculator enables you to convert an angle unit among degrees DEG radians RAD and grads GRAD...

Page 15: ...25 degrees D 45 minutes M 30 55 seconds S Note The total digits of D M and S and separator marks must be within 12 digits or the sexagesimal couldn t be shown completely 12 755 12 45 l 18 l l DEG 12 7...

Page 16: ...sure the calculator is set for the angle unit you want cosh 1 5 2 4 35240961524 DEG c o s h 1 5 2 2nd HYP cos 1 5 2 4 3 5 2 4 0 9 6 1 5 2 4 sinh 1 7 2 64412076106 DEG s i n h 1 1 7 2nd HYP 2nd sin 1...

Page 17: ...7 9 8 2 2 5 8 6 8 DEG Y 2nd x y 2 0 7 2 5 9 3 9 3 1 3 9 Probability This calculator provides the following probability functions nPr Calculates the number of possible permutations of n item taken r at...

Page 18: ...cubic root 2nd 3 universal root 2nd X square x 2 cubic 2nd x 3 and exponentiation x y functions 8 0 25 1 1 DEG 1 2 5 1 1 25 2nd 1 x 0 8 139 5 125 21 4 2 3 3 2 DEG 2 2 4 2 1 2 x 2 4 21 2nd 3 125 5 2nd...

Page 19: ...it 1 y d 2 9 f t 2 0 00000083612 km 2 DEG f t 2 y d 2 m 2 1 CONV CONV 1 DEG f t 2 y d 2 m 2 2nd 9 DEG k m 2 h e c t a r e s 0 0 0 0 0 0 0 8 3 6 1 2 Physics constants You can use 136 physics constants...

Page 20: ...ement law constant b 2 897768651 x10 3 m K 23 Lattice parameter of silicon a 543 10208816 x10 12 m 24 Stefan Boltzmann constant 5 67040040 x10 8 W m 2 K 4 25 Standard acceleration of gravity g 9 80665...

Page 21: ...43867346212 x10 4 57 Electron deuteron mass ratio me md 2 72443711706x10 4 58 Electron charge to mass quotient e me 1 75882017471 x1011 Ckg 1 59 Compton wavelength c 2 42631021518 x10 12 m 60 Compton...

Page 22: ...avelength c 0 6977011 x10 15 m 87 Tau Compton wavelength over 2 pi c 0 11104218 x10 15 m 88 Tau mass m 3 1678852 x10 27 kg 89 Tau mass energy equivalent m c 2 2 8471546 x10 10 J 90 Tau proton mass rat...

Page 23: ...x10 8 s 1 T 1 114 Deuteron mass md 3 3435830926 x10 27 kg 115 Deuteron mass energy equivalent mdc 2 3 0050626224 x10 10 J 116 Deuteron molar mass M d 2 01355321271x10 3 kg mol 1 117 Deuteron electron...

Page 24: ...me 7294 29950816 136 Alpha particle to proton mass ratio m mp 3 97259968461 To insert a constant at the cursor position 1 Press CONST to display the physics constants menu 2 Press or 2nd until the co...

Page 25: ...dard letters they appear as shown in the below Key Display Upper Display Lower Key Display Upper Display Lower A A D ID B IB E IE C IC F IF Select the number base you want to use with BIN OCT DEC HEX...

Page 26: ...or means current block position and the lower indicator means total blocks for a result In the binary base the block 1 is displayed immediately after calculation Other blocks block 2 block 4 are displ...

Page 27: ...on Logical operations are performed through logical products AND negative logical NAND logical sums OR exclusive logical sums XOR negation NOT and negation of exclusive logical sums XNOR 1010 2 AND A...

Page 28: ...vidual data set DATA x value y value Multiple data of the same value DATA x value y value x Number of repeats Note Even you exit STAT mode all data are still retained unless you clear all data by sele...

Page 29: ...2nd y Population standard deviation of x values or y values x 2nd x y 2nd y Sum of all x values or y values x 2 2nd x2 y 2 2nd y2 Sum of all x 2 values or y 2 values x y Sum of x y for all x y pairs C...

Page 30: ...05249234 x 5 41848687366 CP 0 76897236513 and CPK 0 72590991268 DEG STAT 1 V A R L I N L O G MODE 2 DEG STAT D A T A 5 DATA 75 DATA 85 DATA 90 DATA 82 DATA 77 7 7 DEG STAT n n 5 DEG STAT x 2nd x 8 1 8...

Page 31: ...DEG STAT b 2nd b 1 7 5 8 7 3 4 1 7 7 2 2 REG DEG STAT r 2nd r 0 98 9 8 4 5 1 6 4 1 3 REG DEG STAT x 5 7 3 573 x 2 2 5 6 7 0 0 7 3 4 1 3 REG DEG STAT y 1 9 19 y 5 1 0 2 6 5 8 2 2 7 8 5 REG Deleting dat...

Page 32: ...first data item appears 1 second and then the corresponding value DATA DEG dAtA 1 STAT EDIT 1 second DEG 15 STAT EDIT Each time you press value appears directly on the display without data item DEG 15...

Page 33: ...e enables you to add subtract multiply and divide complex numbers The results of a complex operation are displayed as follow Re Real value Im Imaginary value ab Absolute value ar Argument value 7 9 i...

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