Jan 2013
Friday 11 January 2013 – Afternoon
GCSE COMPUTING
A451/01 Computer Systems and Programming
* A 4 2 6 2 6 0 1 1 3 *
Candidates answer on the Question Paper.
Duration: 1 hour 30 minutes
OCR supplied materials:
None
Other materials required:
None
*
A
4
5
1
0
1
*
INSTRUCTIONS TO CANDIDATES
•
•
•
•
•
•
Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.
Use black ink. HB pencil may be used for graphs and diagrams only.
Answer all the questions.
Read each question carefully. Make sure you know what you have to do before starting your answer.
Write your answer to each question in the space provided. Additional paper may be used if necessary but you must clearly show your candidate number, centre number and question number(s).
Do not write in the bar codes.
INFORMATION FOR CANDIDATES
•
•
•
•
The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 80.
The Quality of Written Communication is assessed in questions marked with an asterisk (*).
This document consists of 16 pages. Any blank pages are indicated.
© OCR 2013 [F/600/2375]
DC (NF/SW) 59232/3
OCR is an exempt Charity
Turn over
2
1
(a) Add the following bytes.
+
1
1
0
1
1
0
0
0
0
1
1
0
0
0
0
0
[2]
(b) State the problem that will occur if a computer is to store the result as a byte.
...................................................................................................................................................
............................................................................................................................................. [1]
2
A website is made up of different types of files.
State what each of the file types in the table below is used for.
File type
Use
HTML
JPG
MP3
PDF
[4]
© OCR 2013
3
3
(a) State the output of each of the following logic circuits for the inputs given.
0
NOT
GCSE COMPUTING
A451/01 Computer Systems and Programming
* A 4 2 6 2 6 0 1 1 3 *
Candidates answer on the Question Paper.
Duration: 1 hour 30 minutes
OCR supplied materials:
None
Other materials required:
None
*
A
4
5
1
0
1
*
INSTRUCTIONS TO CANDIDATES
•
•
•
•
•
•
Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.
Use black ink. HB pencil may be used for graphs and diagrams only.
Answer all the questions.
Read each question carefully. Make sure you know what you have to do before starting your answer.
Write your answer to each question in the space provided. Additional paper may be used if necessary but you must clearly show your candidate number, centre number and question number(s).
Do not write in the bar codes.
INFORMATION FOR CANDIDATES
•
•
•
•
The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 80.
The Quality of Written Communication is assessed in questions marked with an asterisk (*).
This document consists of 16 pages. Any blank pages are indicated.
© OCR 2013 [F/600/2375]
DC (NF/SW) 59232/3
OCR is an exempt Charity
Turn over
2
1
(a) Add the following bytes.
+
1
1
0
1
1
0
0
0
0
1
1
0
0
0
0
0
[2]
(b) State the problem that will occur if a computer is to store the result as a byte.
...................................................................................................................................................
............................................................................................................................................. [1]
2
A website is made up of different types of files.
State what each of the file types in the table below is used for.
File type
Use
HTML
JPG
MP3
[4]
© OCR 2013
3
3
(a) State the output of each of the following logic circuits for the inputs given.
0
NOT