-BASIC CALCULATOR-[iOS]

-as of [1 FEBRUARY 2025]–

-20 BUTTONS-

-5 [ROWS] OF [4]-

-[BASIC CALCULATOR] USER GUIDE-

-HISTORY-

*ROTATE [iPHONE] 90° [LEFT/RIGHT] FOR “HORIZONTAL VIEW”* —>

-4 [ROWS] OF [5]-

*THE [INPUT BOX] DISPLAYS “0” BY DEFAULT* —>

*10 “DIGIT BUTTONS”* —>

[0 / 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9]

-TAPPING “0” DOES NOT ADD ANOTHER “0” TO A CLEARED “INPUT BOX”-

*TAP [DECIMAL BUTTON] TO INSERT A [DECIMAL] AFTER THE “0” IN A CLEARED “INPUT BOX”* —>

-TAPPING THE “DECIMAL BUTTON” AGAIN WILL NOT ADD ANOTHER [DECIMAL] TO [INPUT BOX]-

-WHEN “INBUT BOX” IS CLEARED, THIS [BUTTON] IS DISPLAYED IN [TOP LEFT] OF [BUTTON GRID]* —>

“ALL CLEAR”

(THIS BUTTON IS ONLY FOR SHOW WHEN “INPUT BOX” IS CLEARED)

-AS SOON AS YOU ADD A “CHARACTER” TO “INPUT BOX” THE “AC BUTTON” CHANGES TO THIS SYMBOL* —>

*TAP THIS BUTTON TO DELETE THE “RIGHTMOST CHARACTER” IN YOUR [INPUT BOX]-

-[PRESS/HOLD] THIS BUTTON TO CLEAR THE “INPUT BOX”-

*[POSITIVE/NEGATIVE] BUTTON* —>

-THIS BUTTON DOES NOT WORK WITH “CLEARED INPUT BOXES”-

*HOWEVER, IT DOES WORK WHEN [INPUT BOX] CONTAINS “0.”* —>

(EVEN THOUGH IT DOESN’T MATTER WHETHER “O” IS DISPLAYED AS [POSITIVE/NEGATIVE])

*TAP THE BUTTON AGAIN TO REVERT TO “POSITIVE”* —>

(UNLIKE “NEGATIVE VALUES”, DISPLAYED “POSITIVE VALUES” DO NOT BEGIN WITH A [ + ])

*IF THERE ARE MULTIPLE “NUMERALS” IN THE “INPUT BOX”, THE [POSITIVE/NEGATIVE BUTTON] IS ONLY APPLIED TO THE “RIGHTMOST / MOST RECENT” NUMERAL IN THE “INPUT BOX”* —>

*THE [POSITIVE/NEGATIVE BUTTON] DOESN’T WORK WHEN THE “RIGHTMOST CHARACTER” IN “INPUT BOX” IS AN “OPERATOR”* —>

-CLEAR [INPUT BOX]-

*PERCENTAGE BUTTON* —>

*WHEN “INPUT BOX” IS CLEARED, TAPPING THIS BUTTON ADDS A [%] AFTER “0”* —>

(EVEN THOUGH “0” + “0%” ARE EQUAL)

-IF THE “RIGHTMOST CHARACTER” IN “INPUT BOX” IS AN “OPERATOR”, THAT “OPERATOR” IS REPLACED BY “PERCENTAGE SIGN” WHEN YOU TAP THE “PERCENTAGE BUTTON”-

*YOU CAN ADD MULTIPLE “PERCENTAGE SIGNS” TO “INPUT BOX”* —>

*TO CONVERT THE “PERCENTAGE” TO “DECIMAL FORM”, TAP THE [EQUAL SIGN BUTTON]* —>

-THE “PERCENTAGE FORM” IS DISPLAYED IN A “SMALLER GRAY FONT” OVER THE “DECIMAL FORM”-

-TAPPING THE [EQUAL SIGN BUTTON] AGAIN DOESN’T DO ANYTHING-

*TAP THE “DIVISION OPERATOR BUTTON”* —>

(THE “DIVISION SIGN” DOESN’T MEAN ANYTHING WHEN “INPUT BOX” IS “0”)

(DIVIDING “0” BY ANY “VALUE” ALWAYS YIELDS “0”)

*INPUT A “NUMERIC VALUE”* —>

-INPUT A [DIVISION OPERATOR]-

-IF “RIGHTMOST CHARACTER” IN [INPUT BOX] IS AN “OPERATOR”, YOU CANNOT INPUT THE SAME “OPERATOR” IMMEDIATELY AFTER IT–

-IF YOU TAP ANOTHER “OPERATOR”, IT REPLACES THE “RIGHTMOST OPERATOR”-

*INPUT ANOTHER [NUMERIC VALUE]* —>

*TAP [EQUAL SIGN]* —>

*THIS WORKS EVEN IF THE “RIGHTMOST CHARACTER” IN YOUR “INPUT BOX” IS AN “OPERATOR”* —>

-TAPPING “EQUAL SIGN” AGAIN DOES NOT REPEAT THE “OPERATION”-

*IF YOU TRY TO “DIVIDE BY 0″* —>

-CLEAR [INPUT BOX]-

*TAP “MULTIPLICATION BUTTON”* —>

(THE “MULTIPLICATION SIGN” DOESN’T MEAN ANYTHING WHEN “INPUT BOX” IS “0”)

(MULTIPLYING “0” BY ANY “VALUE” ALWAYS YIELDS “0”)

-TAP THE “MINUS SIGN BUTTON”* —>

*WHEN “INPUT BOX” IS CLEARED* —>

*IF YOU TAP “EQUAL SIGN”* —>

*IF YOU TAP ANY [“OPERATOR BUTTON” / “PERCENTAGE BUTTON”], THE “INPUT BOX” REVERTS TO “0”* —>

*IF YOU TAP “DECIMAL BUTTON”* —>

(THE “NEGATIVE SIGN” + “DECIMAL POINT” ARE EXTRANEOUS HERE)

*IF YOU TAP “0”* —>

(THE “NEGATIVE SIGN” IS EXTRANEOUS HERE)

*IF YOU TAP A “NUMERAL BUTTON”* —>

-WHEN THE “RIGHTMOST CHARACTER” IN “INPUT BOX” IS A “NUMERIC VALUE”, TAPPING THE “MINUS BUTTON” APPLIES IT AS AN “OPERATOR” INSTEAD OF A “NUMBER SIGN”-

*TAP THE “PLUS BUTTON”* —>