The new line character ('\n') has the ASCII value 10 decimal, 0x0A hexadecimal. In some cases, a new line may be preceded with a carriage-return (ASCII 13 decimal, 0x0D hexadecimal), however the carriage return is only of relevance to line printers. To determine when the enter key is pressed, capture the character via stdin and test for equality with the '\n' character.
import java.util.Scanner; public class NumberSystem { public void displayConversion() { Scanner input = new Scanner(System.in); System.out.printf("%-20s%-20s%-20s%-20s\n", "Decimal", "Binary", "Octal", "Hexadecimal"); for ( int i = 1; i <= 256; i++ ) { String binary = Integer.toBinaryString(i); String octal = Integer.toOctalString(i); String hexadecimal = Integer.toHexString(i); System.out.format("%-20d%-20s%-20s%-20s\n", i, binary, octal, hexadecimal); } } // returns a string representation of the decimal number in binary public String toBinaryString( int dec ) { String binary = " "; while (dec >= 1 ) { int value = dec % 2; binary = value + binary; dec /= 2; } return binary; } //returns a string representation of the number in octal public String toOctalString( int dec ) { String octal = " "; while ( dec >= 1 ) { int value = dec % 8; octal = value + octal; dec /= 8; } return octal; } public String toHexString( int dec ) { String hexadecimal = " "; while ( dec >= 1 ) { int value = dec % 16; switch (value) { case 10: hexadecimal = "A" + hexadecimal; break; case 11: hexadecimal = "B" + hexadecimal; break; case 12: hexadecimal = "C" + hexadecimal; break; case 13: hexadecimal = "D" + hexadecimal; break; case 14: hexadecimal = "E" + hexadecimal; break; case 15: hexadecimal = "F" + hexadecimal; break; default: hexadecimal = value + hexadecimal; break; } dec /= 16; } return hexadecimal; } public static void main( String args[]) { NumberSystem apps = new NumberSystem(); apps.displayConversion(); } }
0xc = 1100 Hexadecimal digits use exactly 4 binary digits (bits). The 0x0 to 0xf of hexadecimal map to 0000 to 1111 of binary. Thinking of the hexadecimal digits as decimal numbers, ie 0x0 to 0x9 are 0 to 9 and 0xa to 0xf are 10 to 15, helps with the conversion to binary: 0xc is 12 decimal which is 8 + 4 → 1100 in [4 bit] binary.
FC(16) = value_of(F)*16 + value_of(C) = 15*16+12 = 252
Depends on the encoding. It is probably 0xF (15), but it could be -1 (if 4 bits in 2's complement), or any other value if a non-standard encoding. the coding can be octal or hexadecimal the value in decimal does not change in octal it is 17 in hexadecimal it is F in decimal is 15. ALL of these numbers are right it depends of what code the reference is to
DCE means: Data Carrier Equipment Hexadecimal value in decimal: 3192
The value in hexadecimal of the decimal number 999910 is F41E6.
1A
Decimal Value: 469 Hexadecimal Value: 1D5
C is 12 decimal.
EE.
The decimal equivalent is 298.
351
value of 10
Value of 10
1C = 28
15