1. 0000
2. 0101
3. 1010
4. 1111
1010
1. I/O devices have 16-bit addresses
2. I/O devices are accessed using IN and OUT instructions
3. there can be a maximum of 256 input devices and 256 output devices
4. arithmetic and logic operations can be directly performed with the I/O data.
arithmetic and logic operations can be directly performed with the I/O data.
1. higher speeds compared to all other types of A/D converters
2. very good accuracy without putting extreme requirements on component stability
3. good rejection of power supply hum
4. better resolution compared to all other types of A/D converters for the same number of bits
good rejection of power supply hum
1. S(t) = cos 2t+cos 3t+cos 5t
2. S(t)=exp(j8πt)
3. S(t)=exp(-7t)sin 10 πt
4. S(t) = cos 2tcos 4t
S(t)=exp(j8πt)
1. G(f) is complex
2. G(f) is imaginary
3. G(f) is real
4. G(f) is real and non-negative
G(f) is imaginary
1. 25%
2. 50%
3. 75%
4. 100%
50\%
1. ½ and 2/3
2. 1 and 4/3
3. 1 and 2/3
4. 1 and 4/3
1 and 4/3
1. π0 π π0
2. 0 π π00
3. 0 π π π0
4. π π0 π π
π π0 π π
1. correlation receiver
2. bandpass filters and envelope detectors
3. matched filter
4. discriminator detection
matched filter
1. enhance the information transmission rate
2. reduce the transmission errors
3. conserve the transmitted power
4. facilitate clock recovery in the receiver
reduce the transmission errors