Watch:
http://www.youtube.com/watch?v=wV0t6smYm8M&safety_mode=true&persist_safety_mode=1&safe=active
then
http://www.youtube.com/watch?v=mTChUWRYIsk&feature=channel&list=UL&safety_mode=true&persist_safety_mode=1&safe=active
How Memory Works
To Begin:
Some Background
Memory is measured in bit and bytes. A bit is a single ONE or ZERO. A Byte is 8 bits. Why 8? Because there are about 256 characters we can type across all languages. 11111111 (eight ones) is the number 255.
Every character is assigned a decimal number between 0 and 255. For a couple of examples:
Q (capital) is assigned the number 81
q (lower case) is assigned the number 113
+ is assigned the number 43
The English only set of characters is called ASCII Code. When we include all the characters across all languages, it is usually called Unicode. The ASCII code converstion table is here: http://www.asciitable.com/
1) Create a page under Computer Science called "How memory works". On this page:
Translate the first 6 letters of your whole name into its ASCII (decimal) equivalent
Translate the first 2 letters from the decimal number into binary
Letter Decimal 128s 64s 32s 16s 8s 4s 2s 1s
RAM is the cheapest and easiest way to improve your computer’s performance.
Most desktop computers have slots to accept up to 4 chips.
Go to futureshop.ca’s memory pages and tell me the most RAM I could buy for $100 (maximum of 4 chips). State the chip size,the cost for each and how many I could buy for $100.
Use the following site to answer the questions: http://computer.howstuffworks.com/computer-memory.htm
Lastly,
What are the Memory Address Register and the Memory Data Register? What are they used for?
What is virtual memory? How does it relate to the hard drive?
http://www.youtube.com/watch?v=wV0t6smYm8M&safety_mode=true&persist_safety_mode=1&safe=active
then
http://www.youtube.com/watch?v=mTChUWRYIsk&feature=channel&list=UL&safety_mode=true&persist_safety_mode=1&safe=active
How Memory Works
To Begin:
Some Background
Memory is measured in bit and bytes. A bit is a single ONE or ZERO. A Byte is 8 bits. Why 8? Because there are about 256 characters we can type across all languages. 11111111 (eight ones) is the number 255.
Every character is assigned a decimal number between 0 and 255. For a couple of examples:
Q (capital) is assigned the number 81
q (lower case) is assigned the number 113
+ is assigned the number 43
The English only set of characters is called ASCII Code. When we include all the characters across all languages, it is usually called Unicode. The ASCII code converstion table is here: http://www.asciitable.com/
1) Create a page under Computer Science called "How memory works". On this page:
Translate the first 6 letters of your whole name into its ASCII (decimal) equivalent
Translate the first 2 letters from the decimal number into binary
Letter Decimal 128s 64s 32s 16s 8s 4s 2s 1s
RAM is the cheapest and easiest way to improve your computer’s performance.
Most desktop computers have slots to accept up to 4 chips.
Go to futureshop.ca’s memory pages and tell me the most RAM I could buy for $100 (maximum of 4 chips). State the chip size,the cost for each and how many I could buy for $100.
Use the following site to answer the questions: http://computer.howstuffworks.com/computer-memory.htm
- List six of the ten different types of electronic memory from page 1 of the website.
- Check out the Memory Hierarchy Pyramid on the Computer Memory Basics page (page 2) and read the included explanation.. Insert a copy of the picture below and then, in one sentence, explain what it means when Level 2 cache is further up the hierarchy than a USB drive.
- ROM stands for ______________________________. It is a type of permanent/temporary (highlight one) memory.
- BIOS stands for ____________________________________. It provides basic information for the computer on __________________________ (4 things are listed on the website)..
- RAM stands for ________________________________. It is a type of permanent/temporary (highlight one) memory.
- Page 2 describes all the things that can be loaded into RAM. List three or four.
- What happens to the data stored in RAM when an application is closed?
- What is the cheapest form of read/write memory available today? Why is it so popular to use large quantities of this kind of storage?
- What does bit-size mean (as in 32-bit or 64-bit computer)?
- The length of the clock cycle is used to determine a CPU’s processing speed. What unit of measurement is used?
- RAM is not fast enough to keep up with the CPU. Therefore some even higher speed memory is needed. What is this high speed memory called?
- Explain registers. Where do they sit on the memory hierarchy pyramid?
Lastly,
What are the Memory Address Register and the Memory Data Register? What are they used for?
What is virtual memory? How does it relate to the hard drive?