Assume ASCII encoding of characters, and a 2’s complement encoding of negative n

ID: 3782714 • Letter: A

Question

Assume ASCII encoding of characters, and a 2’s complement encoding of negative numbers. Recall what you have learned about 2’s complement encoding from other courses. When representing a number in hexadecimal or binary, use the proper number of digits for the TM4C123 architecture (depends on type of variable). The first row has been completed for you.

signed charx 60 unsigned charx 'S'; unsigned charx E unsigned charx 1'; unsigned charx 8'; shortx 0x288 short x 0XEECE signed char x 0b00111001 unsigned short x 0x2050 0x2041; signed char x 0x8 4 signed char x 0x68 8; signed short x signed short x 128 signed char x 20 signed charx -1; unsigned charx 15 x (decimal) 60 Value of x x (hex) 0x3c x (binary) 0b0011 1100

Explanation / Answer

x (decimal)

X (hex)

X (binary)

Signed char x = 60

0x3c

0b00111100

Unsigned char x = ‘S’

0x53

0b 01010011

Unsigned char x = ‘E’

0x45

0b 01000101

Unsigned char x = ‘1’

0x31

0b 00110001

Unsigned char x = ‘8’

0x38

0b 00111000

Short x = 0x288

648

0x0288

0b0000001010001000

Short x = 0xEECE

61134

0xEECE

0b1110111011001110

Signed char x = 0b00111001

0x39

0b00111001

Unsigned short x = 0x2050 + 0x2041

16529

0x4091

0b01000000 10010001

Signed char x = 0x8 + 4

0xc

0b00001100

Signed char x = 0x68/8

0xd

0b00001101

Signed short x = -1

-1

0xffff

0b11111111 11111111

Signed short x = -128

-128

0xff80

0b11111111 10000000

Signed char x = 20

0x14

0b00100100

Signed char x = -1

-1

0xff

0b11111111

Unsigned char x = 15

0x0f

0b00001111