Show how two NOR gates may be connected to form an RS latch. Describe its operation and give a table relating its inputs to its outputs.


You can consider the information provided below in answering the question. (Optional)




The owner (patient) may read from its own BEHR. A qualified and employed doctor may read and write the EHR of a patient registered with him/her. (iv) Object: The solution to online coursework. Policy: The coursework setter has read and access. A candidate has no access until after the marks have been published. 4 CST.2004.13.5 5 Computer Graphics and Image Processing

(a) Explain why to display devices appear to be able to reproduce (almost) all the colours of the spectrum using only red, green and blue light.

(b) Describe an algorithm (other than thresholding) that will convert a greyscale image (8 bits per pixel) to a bi-level black and white image (1 bit per pixel), with the same number of pixels, while retaining as much detail as possible. (b) Provide a circuit diagram which implements the following Boolean function using
only NAND gates
F = (A + D).(B + C + D).(A + B + C)
that has the don't care states: A.B.C.D, A.B.C.D, A.B.C.D and A.B.C.D


(a)How could you use this circuit to eliminate the effect of contact bounce in a single pole double throw switch supplying an input to a digital logic circuit? [6 marks Object n = new Integer(245), o = new String("Baby"); Object [] v; Integer [] w = new Integer[11]; v = w; v[7] = n; v[6] = o; [10 marks] (e) Consider the Java code: Object n = new Integer(42); ArrayList v1; ArrayList v2; ArrayList w = new ArrayList<>(10); Explain any differences in behavior between assignments v1 = w and v2 = w and also between method calls v1.set(4,n) and v2.set(4,n). [4 marks] 6 CST.2016.3.7 6 Further Java

(a) Describe the operation of wait() and notifyAll(). Ensure that your answer explains when locks are acquired and released. 

(b) A future is a mechanism to store the eventual result of a computation done in another thread. The idea is that the computation is run asynchronously and the calling thread only blocks if it tries to use a result that hasn't been computed yet. An example program using a future is shown below. Future f = new Future() { @Override public String execute() { // ...long running computation... return data; }; // ... String result = f.get(); // blocks if execute() unfinished Use wait() and notifyAll() to provide an implementation of the Future class that would work with the example program above. 

(c) Give one potential advantage and one potential disadvantage of using notify() instead of notifyAll.

(d) Would it have been beneficial to use notify() instead of notify All in your implementation? Justify your answer. 7 (TURN OVER) CST.2016.3.8 7 Prolog In this question you should ensure that your predicates behave appropriately with backtracking and avoid over-use of cut. You should provide an implementation of any library predicates used. You may not make use of extra-logical built-in predicates such as findAll. Minor syntactic errors will not be penalized.

(a) Rewrite chooseAll without using not and cut (!). hooseAll(N,L,Res) :- chooseAll(N,L,[],Res). chooseAll(N,L,Seen,Res) :- choose(N,L,R), not(member(R,Seen)), !, chooseAll(N,L,[R|Seen],Res). chooseAll(,,Res,Res). 

(e) What is Last Call Optimisation and why is it beneficial? 

(f ) Rewrite pos to enable Last Call Optimisation.

Scenario A
The characteristics of the network described above, design a protocol for distributing this information across the network. You should specify the format of your messages and the size of any message fields Describe in detail both Prim's and Kruskal's algorithms for finding a minimum cost spanning tree of an undirected graph with edges labeled with positive costs, and explain why they are correct.
Compare the relative merits of the two algorithms. 

(a) What is an information reserve and how can it contrast with a guidance store?

(b) What factual properties of memory access reserves exploit to convey further developed execution?
(c) What effect will a working framework oversaw setting switch have on the reserve hit rate? Legitimize your response.
(d) Modern work area and server processors support concurrent multithreading (additionally called hyperthreading). At this point when will there be an exhibition benefit in booking two non-intelligent applications on the equivalent hyperthreaded processor center so they run equally as opposed to running consecutively, one working one after the other?