An ideal digital differentiator is described by the system 1 yn=(xn+1-xn-1)-— — (xn+2] − x n − 2]) + 1 = (x[n + 3] − x[n − 3]) + ... (a) Is the system LTI? (b) Is it causal? (c) Prove it is not BIBO stable. (d) Provide a bounded input a[n] that produces an unbounded output y[n].

Please assist me with question

Q_. A simple comparator and a Schmitt trigger are shown in Figures 2(a) and _(b). The maximum output voltage, Vmax, can switch between -10 V and ! 10 V for both circuits. The lower and upper trigger levels of the Schmitt trigger are -1 V and 12 V, respectively. a) b) Based on the information given above, sketch the transfer characteristics for both circuits. +2V Show that the hysteresis of the Schmitt trigger of Figure 2(b) can be expressed as c) Using the parameters provided above, determine the ratio of R₂/R₁ for the circuit of Figure 2(b). 1₂ Vhys = Figure 2(a) 2.R₁-Vmax R₁ + R₂ V₂ KŲ +0.6V R₂ Figure 2(b) Tºv.

Design a circuit using a Multiplexer, that has two inputs X, and S, where X represents an 8-bit BCD number,S is a sign bit. The circuit has one output Y, which is the Binary representation of thesigned-magnitude BCD number. A negative output is represented in the Binary 2’scomplement form.

B- Select the best answer from multiple choices 1. A sinusoidal signal has a frequency of 4KHz the best sampling frequency is: a- Equal to 8 KHz. b. More than 8 KHz. c. Both (a) and (b). d. Another value. 2. A signal x(t) with dynamic range +4 volts is sampled and quantised using a 3 bit analogue-to-digital convertor (ADC). The quantisation step size is : a. 2 volts b. 1 volts c. 0.5 volts d.0.2 volts. 3. The shift keying technique with a minimum requirements is : a. ASK b. PSK c. FSK d. None of the above.

Design a circuit that has two inputs X, and S, where X represents an 8-bit BCD number,S is a sign bit. The circuit has one output Y, which is the Binary representation of thesigned-magnitude BCD number. A negative output is represented in the Binary 2’scomplement form. (((Design two deffrent alternative block diagrams and then describe the block diagrams))) PLEASE DONT COPY ANOTHER SOLUTION IT SHOULD BE UNICE

The graphical methods could be extended to other models. Develop a Method of estimating the parameters in a second-order transfer function a constant numerator for a step input forcing function. The method should be able to fit both over damped and under damped identification systems. State all assumptions and explain all six steps.

The following figure depicts a sampled analog signal for digital signal representation. By applying the concept of Pulse Code Modulation find the 4-bit code words and finally draw the line coding by using Bipolar-AMI scheme. You have to solve the problem by using step by step formulation of normalized PAM values, normalized quantized value, normalized error and quantization code. Assume that the sampling amplitudes are between -40V to +40V. Time Analog Signal Value (V) 23.7 1 -15.7 2 -29.6 3 20.5 33.5 4.

THIS QUESTION FROM DIGITAL COMMUNICATION ONE COURSE