Test your computer knowledge?

Question

Hi to all.
I am having qquestns that are related to comps. Can you answer them? I need the exact answer. It's just to test your knowledge
1) What is the 8 bit 2-complement representation of -39?
2) What is the ascii code of 'u' Give its decimal value
3)What is the most distinguishing feature of JAVA prog lang?
4)Why do we say that the web is also a computer?
5)What was the Charles Babbage's computer known as?
6)What is the origin of word "LINUX"?
7) How is color represented in computer?

Answer 1

I'll help you a little but I'm not going to give you the answer to all of them.

5) the Cray super computer?

7) the Hexadecimal code

Answer 2

1) 8-bit 2-complement -39 : 11111111 - 00101001 = 11010110
2) Ascii code for 'u' : HEX 75 DEC 117
3) Distingishing feature of Java: It runs s-o s-l-o-w, but it could be the platform independence, although it is not totally write one run anywhere.
4) The web as a computer: Did not know it was, but it could be because all services are provided by a 'computer'. Knowing the definition of a computer, not neccessarily what people think a computer is would allow this to be true. Something similar to 'A computer takes input, provides output, and perhaps does some calculation', although that is also the definition for a function.
5) Charles Babbage's computer: Analytical Machine, or Automaton Machine.
6) LINUX is coined from the name of the creator, Linus and UNIX. Not sure what is from what though.
7) Color represented. Ok, for the atomic view it would be bits, 0's and 1's. From the systems point of view, 24 bit color would be in 3 8 bit registers. The registers growing if more information is needed, eg 48 bit color. For typing colors into web sites or programmes in RGB mode, it takes the form of either decimal numbers from 0 to 255 inclusive, for each color of Red, Green, Blue, or the Hexadecimal equivalent. This does not take into account Gamma correction, ICC color profiles, CYMK, etc.

Answer 3

Hey buddy, though I don't have answers to all the ten questions,I would still attempt those which I know.

Q.3) The most distinguishing feature of JAVA programming language is it being platform independent. i.e; the java programm can be executed on a pc running any operating system, the java software or JDk is previously installed and a CLASSPATH is set.
A program written in any other traditional language like C/C++, when compiled will give a file containing object which can be identified by it's .OBJ extension. While running the same program the C/C++ compiler looks upto this file for executing the program. Where in case of JAVA, when a source file is compiled using the java compiler(i.e; JAVAC) a seperate file called a bytecode file is created.This is different from source file and the object file of C/C++. The java interpreter(JAVA), a tool used for running the java program looks up to this file for executing the program. This bytercode file is not dependent on the underlying operating system. A byte code file obtained by compiling a java program on WINDOWS can be executed on UNIX/LINUX/SOLARIS/MAC-INTOSH without altering the source. Hence the java applications are platform independent.

There is also a down side to the story. Because of the presence of the bytecode file an intermediary layer is created between the source code and the operating system. The java software contains JRE, a utility which converts the bytecode file into object code file which is the file needed for the underlying operating system to understand the program. Hence the time taken for executing applications written in JAVA is longer than those written in C/C++/COBOL languages.

Q.6)Linux is named after it's creator, LINUS TORWALDS who created an operating system on the lines of UNIX. Hence LINUS'S UNIX went on to be known as LINUX.

Q.7)Color is represented using pigments.

Answer 4

First of all I must say that this seems to be a homework (for Asembly & machine language maybe) rather than a computer knowledge test, ok? Here are some answers in return for 10 points, OK?

1. I need a pen & a piece of paper, do this one yourself, it's not that hard. Here is an example for -21, it may help you: 11101011 = EB (hex)
2. ascii coe of 'u': 117 in decimal
3. http://en.wikipedia.org/wiki/Java
4. I guess it's becuase every site need to be on an online server all the time, so everyone can visit it on the internet, therefore web is a computer itself.
5. programmable computer ( http://en.wikipedia.org/wiki/Charles_babbage )
6. Linus Trovalds, the creator of Linux
7. http://en.wikipedia.org/wiki/Rgb

Answer 5

Test Your Computer Knowledge

Answer 6

For 10 points? No way! For 2 points, even more so!

Answer 7

1)00011001
2)117
3) pure object oreinted language
4)every web page is a output from some other computer
5)ABACUS
6)
7)RGB

Answer 8

compute is an electronic device which is capable of reciving information through an input device process data and generate miniful information which is useful to the userr through an out put device

Answer 9

1) 11011001
2) bin= 01110101 dec=117
3) it smells of coffee
4) we don't, the web is a router
5) analytical engine
6) LInus whatshisnames version of uNIX
7) in binary of course

Answer 10

I agree these are homework questions. I think that you need to read the text.