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can any of you mans do this for me? thanx in advance. really appreciate it if you could...
A2 Computing
Assignment for Module 4
Assignment 1
Assignment is due in on Thursday 18th October 2001
Binary Arithmetic
1. Convert the following numbers to binary using twos complement representation
9 -6 -99
2. Assuming 10 bits represent a binary number, with the first being a sign bit (twos
complement). Convert the following binary digits to decimal
000011101
001001011
110001111
3. Normalise the following numbers, which are held with a 10-bit mantissa and
6-bit exponent
0 000000110 000111
0 000010111 000110
1 111110111 000000
1 111111010 000011
4. the binary number 1010 1011 0111 can be represented in a number of different
ways
a. State its hexadecimal form
b. State its value in denary if it represents
(i) an unsigned binary digit
(ii) a twos complement floating point number with an eight bit mantissa
followed by a 4-bit exponent
A2 Computing
Assignment for Module 4
Assignment 1
Assignment is due in on Thursday 18th October 2001
Binary Arithmetic
1. Convert the following numbers to binary using twos complement representation
9 -6 -99
2. Assuming 10 bits represent a binary number, with the first being a sign bit (twos
complement). Convert the following binary digits to decimal
000011101
001001011
110001111
3. Normalise the following numbers, which are held with a 10-bit mantissa and
6-bit exponent
0 000000110 000111
0 000010111 000110
1 111110111 000000
1 111111010 000011
4. the binary number 1010 1011 0111 can be represented in a number of different
ways
a. State its hexadecimal form
b. State its value in denary if it represents
(i) an unsigned binary digit
(ii) a twos complement floating point number with an eight bit mantissa
followed by a 4-bit exponent
Page:
well, simply put, the question has 2 faults:
1) it says it is using 10 bits to store a number... the actual numbers given only have 9 bits.
2) The question says it is using 2s compliment, but then says that the first bit indicates a sign... which is 1s compliment (or sign and magnitude form if you prefer), rather than 2s compliment.
1) it says it is using 10 bits to store a number... the actual numbers given only have 9 bits.
2) The question says it is using 2s compliment, but then says that the first bit indicates a sign... which is 1s compliment (or sign and magnitude form if you prefer), rather than 2s compliment.
YOu mean where u wrote is it 9 bits or 10 bits? Honestly i havnt a clue, maybe it is wrote like that becasue of the sign bit? i dunno...
Nice one Logan!
Dav1d wrote:
> While we're on the subject......
----
AS Computing Homework 3 (Module
> 2)
Unit 33
The Operating System
1) What is an operating system?
A program that controls the interface between the hardware a software of a computer and controls the processor.
2)
> Describe five functions of an operating system
NO!
3) What is
> multiprogramming?
This is when the usage of a CPU is sliced between more than one program. Therefore one program has control of the CPU (via the OS) for a fixed time, and then another one has control of the CPU. Therefore it appears to the user that the computer is processing more than one program instruction at a time.
4) What is meant by the term 'virtual machine'?
hmmmmmm... i could explain virtual memory, but that would be useless!
5)
> Describe each of the following processing modes
a) Batch
All data to be processed is first collected, and then processed together. The process is used when it is known when the results of the process are needed, and when the data is processed in a similar way. An example is the processing of gas bills, where all the meter readings are read, input into the computer, and then can be processed all at the same time, when the computer system is under used (eg, at night-time), thus saving CPU time.
b)
> Interactive
The user input will alter the outcome of the process.
c) Real-time
Processing is carried out immediatley, for example in a game.
d) Pseudo real-time
hmmmmmm... no idea
6) What is a network
> operating system?
An OS that can be used on a network!
7) How does the operating system help file
> management?
ummm... i could talk about this all day!
8) What is the difference between a drive, a folder and a
> file?
Drive: the label for a memory store
Folder: A directory that stores various files.
File: a list of records and data.
9) What is a pathname?
an individual location for a piece of data.
10) Describe five different access rights
> that might be assigned to a file
Archeive: Non-updatable... off line
Read only
Write only
Read and Write
Something else!
You can do the descriptions!
11) What is backing up?
Making a copy of data so that in the event that the original data is lost (eg, there is a fire), then data can be retreived from the backup. It should be strored away from the main computer.
12) Describe five
> different methods of backing up
Surely u can blag this!
-----
Has to be worth a try! :-D
> While we're on the subject......
----
AS Computing Homework 3 (Module
> 2)
Unit 33
The Operating System
1) What is an operating system?
A program that controls the interface between the hardware a software of a computer and controls the processor.
2)
> Describe five functions of an operating system
NO!
3) What is
> multiprogramming?
This is when the usage of a CPU is sliced between more than one program. Therefore one program has control of the CPU (via the OS) for a fixed time, and then another one has control of the CPU. Therefore it appears to the user that the computer is processing more than one program instruction at a time.
4) What is meant by the term 'virtual machine'?
hmmmmmm... i could explain virtual memory, but that would be useless!
5)
> Describe each of the following processing modes
a) Batch
All data to be processed is first collected, and then processed together. The process is used when it is known when the results of the process are needed, and when the data is processed in a similar way. An example is the processing of gas bills, where all the meter readings are read, input into the computer, and then can be processed all at the same time, when the computer system is under used (eg, at night-time), thus saving CPU time.
b)
> Interactive
The user input will alter the outcome of the process.
c) Real-time
Processing is carried out immediatley, for example in a game.
d) Pseudo real-time
hmmmmmm... no idea
6) What is a network
> operating system?
An OS that can be used on a network!
7) How does the operating system help file
> management?
ummm... i could talk about this all day!
8) What is the difference between a drive, a folder and a
> file?
Drive: the label for a memory store
Folder: A directory that stores various files.
File: a list of records and data.
9) What is a pathname?
an individual location for a piece of data.
10) Describe five different access rights
> that might be assigned to a file
Archeive: Non-updatable... off line
Read only
Write only
Read and Write
Something else!
You can do the descriptions!
11) What is backing up?
Making a copy of data so that in the event that the original data is lost (eg, there is a fire), then data can be retreived from the backup. It should be strored away from the main computer.
12) Describe five
> different methods of backing up
Surely u can blag this!
-----
Has to be worth a try! :-D
OrÜega wrote:
> can any of you mans do this for me? thanx in advance. really appreciate it if
> you could...
A2 Computing
Assignment for Module 4
Assignment
> 1
Assignment is due in on Thursday 18th October 2001
Binary
> Arithmetic
1. Convert the following numbers to binary using twos complement
> representation
9 -6 -99
9 is 00001001
-6 is 11111010
-99 is 10011101
I assume that u are using 1 byte per number
2. Assuming 10 bits represent a binary number,
> with the first being a sign bit (twos
complement). Convert the following
> binary digits to decimal
000011101
001001011
110001111
errrrr... i think you mean ONES compliment... not 2s compliment, where the first bit is a -128, rather that a +/-. So, using a ones compliment number:
Oh... actually all the numbers are 9 bits! I thought u said 10 bits! Assuming the question should have said 9 bits:
000011101 = 29
001001011 = 75
110001111 = -143
HOWEVER: i have assumed u meant 1s compliment, and that it should have said 9 bits in the question.
3. Normalise
> the following numbers, which are held with a 10-bit mantissa and
6-bit
> exponent
0 000000110 000111
0 000010111 000110
1 111110111 000000
1
> 111111010 000011
I do this topic next week!
4. the binary number 1010 1011 0111 can be represented in a
> number of different
ways
a. State its hexadecimal form
ab7
b. State its
> value in denary if it represents
(i) an unsigned binary digit
2743
(ii) a twos
> complement floating point number with an eight bit mantissa
followed by a
> 4-bit exponent
next week!
Anyway, I hope i helped
> can any of you mans do this for me? thanx in advance. really appreciate it if
> you could...
A2 Computing
Assignment for Module 4
Assignment
> 1
Assignment is due in on Thursday 18th October 2001
Binary
> Arithmetic
1. Convert the following numbers to binary using twos complement
> representation
9 -6 -99
9 is 00001001
-6 is 11111010
-99 is 10011101
I assume that u are using 1 byte per number
2. Assuming 10 bits represent a binary number,
> with the first being a sign bit (twos
complement). Convert the following
> binary digits to decimal
000011101
001001011
110001111
errrrr... i think you mean ONES compliment... not 2s compliment, where the first bit is a -128, rather that a +/-. So, using a ones compliment number:
Oh... actually all the numbers are 9 bits! I thought u said 10 bits! Assuming the question should have said 9 bits:
000011101 = 29
001001011 = 75
110001111 = -143
HOWEVER: i have assumed u meant 1s compliment, and that it should have said 9 bits in the question.
3. Normalise
> the following numbers, which are held with a 10-bit mantissa and
6-bit
> exponent
0 000000110 000111
0 000010111 000110
1 111110111 000000
1
> 111111010 000011
I do this topic next week!
4. the binary number 1010 1011 0111 can be represented in a
> number of different
ways
a. State its hexadecimal form
ab7
b. State its
> value in denary if it represents
(i) an unsigned binary digit
2743
(ii) a twos
> complement floating point number with an eight bit mantissa
followed by a
> 4-bit exponent
next week!
Anyway, I hope i helped
Ever since Year 7 (and I'm year 9 now), people are always coming up to me, asking me questions. Common questions I get are:
How do you do that?
How do you copy and paste?
How do you make a bar chart?
There's a huge list, but that goes all the way back to YR 7. When people ask me, I'm laughing inside because it's so easy. Damn computer illiterates! :D
How do you do that?
How do you copy and paste?
How do you make a bar chart?
There's a huge list, but that goes all the way back to YR 7. When people ask me, I'm laughing inside because it's so easy. Damn computer illiterates! :D
I remember in second year when they first installed the network, some people couldnt work out how to put in their username.
It's surname_forename. how easy could it be. mines just THOMPSON_ANDREW, it even locks the caps for you, stupid people.
It's surname_forename. how easy could it be. mines just THOMPSON_ANDREW, it even locks the caps for you, stupid people.
LOL
Aint it great annoying people like that!
The kinda people that wouldnt even know how to turn the monitor if they werent shown and demonstrated!
Aint it great annoying people like that!
The kinda people that wouldnt even know how to turn the monitor if they werent shown and demonstrated!
My latest bit of fun was making an error message in paint, putting it in a document and shoving it in the shared documents on the network, as soon as someone left there PC i'd load it up and sit there laughing at them, the first was something like:
"Microsoft Word is broke. Please Press OK to destroy the system."
It was great fun.
"Microsoft Word is broke. Please Press OK to destroy the system."
It was great fun.
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