User manual CITIZEN SR-70

[. . . ] Pressing this key will change the mode of angle unit DEG RAD GRAD and display it sequentially on LCD. Pressing this key after [SHIFT] key shall change the mode of angle and shall convert the displayed data. DEG RAD : RAD = DEG x /180 RAD GRAD : GRAD = RAD x 200/ GRAD DEG : DEG = GRAD x 180/200 (6) [0] ~ [9] : Press these keys in their logical sequence to enter numbers. When press as the first number, it is regarded as [0] and [ · ] keys are pressed. [. . . ] or when errors are generated, the special display "( )" goes out. If it is within the allowable range of pending, [ ( ] can be input into any place in an expression as many times as desired. However, if the key is pressed continuously 16 times or more, it becomes error. From a viewpoint of numerical expression when the corresponding " ) " key is not pressed, the operation is not executed even if the " ( " key is pressed. On the other hand, When the " ( " key is pressed and the " = " key is the pressed without pressing the corresponding " ) " key, the operation is also completed according to the priority. The memory register "M" used by these keys is a completely independent single memory. When any data except for 0 is stored in "M", the special display "M" illuminates. When any arithmetic functions constant mode has been set, the displayed number is converted from a percentage to a decimal. Example: 61. 5% Key Input Display [6] [1] [ · ] [5] [SHIFT] [%] 0. 615 b. When [=] key is pressed after [%] following arithmetic function will be executed. - E4 - SR8D1A-E. RTF SIZE : 140x75mm SCALE 2:1 2003/8/22 CALCULATION EXAMPLE KEY OPERATION LCD DISPLAY WHAT IS 30% OF 450?Input of 2 variable is performed by setting x or r pressing [a] key and y or pressing [b] key. The operation result of x or r is obtained in the display register or by pressing [a] key and y or by pressing [b] key. Input Data a RP (Rectangular Polar) PR (Polar Rectangular) ( r, ) r = x r b y a r x Result b y x 2 + y 2 , = tan-1 y/x ( x, y) x = r cos , y = r sin - E8 - SR8D1A-E. RTF SIZE : 140x75mm SCALE 2:1 2003/8/22 e. (R P Conversion) ([x, y] [r, ]) Key operation x a y b RP b Display x x y y r f. (P R Conversion) ([r, ] [x, y]) Key operation Display b r a PR b r r x y (23) Statistical calculation mode ([SHIFT] SD [ ON/C ]). SD a. When you calculate the calculation of statistics, pressing [SHIFT] [ ON/C ] keys for statistics mode ("SD" sign ). When you clear to statistics mode, press the same keys ([SHIFT] [ ON/C ] ). b. You can't perform the memory calculation, parenthesis calculation or conversion of coordinates. you can calculate the following statistical volume in this calculator. n : The population standard deviation of the data. n Xi i =1 x x= = n n SD n n - 1 = 2 ( Xi - x ) i =1 n-1 = x 2 - ( x ) 2 n n-1 n n = 2 ( Xi - x ) i =1 n = x 2 - n ( x ) 2 n - E9 - SR8D1A-E. RTF SIZE : 140x75mm SCALE 2:1 2003/8/22 (24) CPLX : Digit erase / Complex number mode key. When exponential portion is not specified: [ ] : Upon pressing this key immediately after the value is entered, displayed value is shifted to the right and the last digit is erased. [. . . ] These storage levels are also used in calculations involving parenthesis, therefore as long as priority operations involving parenthesis do not exceed 15 levels the calculations may be performed as they appear in the equation. 2. Addition, subtraction, multiplication and division and constant calculations. The added in addition, subtracted in subtraction, multiplicand in multiplication, the divisor in division and the x value in power (xy) and Root ( y x ). Calculations takes on the value of constant. Complex Calculation EXAMPLE (5 + 4i) + (6 + 3i) = 11 + 7i KEY INPUT [SHIFT] [CPLX] 5 [a] 4 [b] [+] 6 [a] 3 [b] [b] [=] DISPLAY DEG DEG DEG DEG DEG DEG DEG DEG CPLX 0. CPLX 7. EXAMPLE 6 x (7 - 9i) x (-5 x 8i) = 222 + 606i KEY INPUT [ON/C] 6 [a] [x] 7 [a] 9 [+/-] [b] [x] - E15 - DISPLAY DEG DEG DEG DEG CPLX 0. [. . . ]