$3\mathrm{.}12$ HOMEWORK PROBLEMS

$3\mathrm{.}1$ Convert the following binary patterns to hexadecimal:

$1101$

$01010$

$10011$

$11001100$

$110011000001$

$3\mathrm{.}2$ Construct a comparison expression that will test if bits $0,2,$ and $4$ in a byte are all in the high state

without altering the state of the byte.

$3\mathrm{.}3$ Construct an expression that will clear bits $1,3,$ and $5$ in a byte$-$sized variable called Bumpers

while not altering any of the other bits.

$3\mathrm{.}4$ Construct an expression that will set bit $1$ in a byte$-$sized variable called PortA without affecting

any of the other bits in the variable.

$3\mathrm{.}5$ Write out the $16-$bit hexadecimal representation of the following signed decimal numbers

$($assume the representation is $2\text{'}$s complement$)$:

$10-17-27-45-128127$

$3\mathrm{.}6$ Construct an expression that will test if either bit $0$ or bit $3$ in a byte$-$sized variable is in the high

state without altering the state of the byte.

$3\mathrm{.}7$ Construct an expression that will test if either bit $1$ or bit $3$ in a byte$-$sized variable is in the low

state without altering the state of the byte.

$3\mathrm{.}8$ What result would you expect from the following expressions if all values were contained in

byte$-$sized variables?

$\frac{2402}{4}$

$\frac{2402}{10}$

$(\frac{240}{10})2$

$(\frac{240}{4})2$

$3\mathrm{.}9$ Construct an expression that will clear bit $1$ in a byte$-$sized variable called PortA without alter$-$

ing any of the other bits.