Answer:
The answer is A. Quadrature amplitude modulation
Explanation:
Quadrature amplitude modulation or QAM is a type of digital modulation used in telecommunications.
QAM is a technique that involves the combination of two amplitude-modulated (AM) signals within a single communication channel through the use of analog modulation or amplitude modulation techniques to optimize communication.
QAM results in more efficient bandwidth for better communication.
Answer:
Sir William Crookes invented the cathode ray tube in 1878, but these discoveries took many years to merge into the common ground of television. His mechanical system used a scanning disk with small holes to pick up image fragments and imprint them on a light-sensitive selenium tube. A receiver reassembled the picture.
Answer:
account recovery
Explanation:
account recovery, provides options for getting access to your old password or resetting the account to a temporary password; users will change to a permanent password upon first login.
Answer:
double x = 2.5;
double y = -1.5;
int m = 18;
int n = 4;
string s = "Storm";
string t = "Watch";
The output of the expression "x + n*y - (x+n)*y" is "6.25".
and the output of expression "m/n + m%n" is "6".
Explanation:
for the first expression,
x + n*y - (x+n)*y ,put value of every variables in it.
=2.5+4*(-1.5)-(2.5+4)*(-1.5)
=2.5-6.0-(6.5*(-1.5)
=-3.5+9.75
=6.25
for the second expression,
m/n + m%n, put value of every variables in it.
=18/4 +18%4
=4+2 ("/ will give quotient and % will give remainder")
=6