SSDs and HDDs

Last lecture we learned about parts inside the mechanical hard drives. I was wondering what a solid state hard drive would be made up of since it doesn't have a actual disk spinning inside of it. After a simple google search....

This is for the mechanical hard drive. They all share a basic structure and are made up of the same physical features. Compared to SSDs, they are much cheaper but slower in accessing files.


This is an HDD (on top) and a SSD (on bottom). Note that the solid state drive is made up completely out of circuit board and access files much quicker than HDDs. They are much more expensive than HDDs. Below is a Video showing the diffrence betwen the two.

Introduction

First post!

So far CSC 104 has been very informative. I have learned a ton about the history of computers, the binary number system and a bit of coding in DrRacket. I also have thought of an easier way to convert from decimal to binary.

Here's how.

Example A.

234 to Binary.

Looking at the powers of 2, the number 234 is sitting in between 256 and 128. We want to use this to subtract the power of 2 less than our number from the number we wish to convert.

Subtraction                             Binary ( 1 if if subtract-able without becoming negative, 0 if negative)
234 - 128 = 106                        1
106 - 64 = 42                            1        (Now our number is 106, the next lowest power of 2 is 64)
42-32 = 10                                1
10-16 = NEGATIVE                    0
10-8 = 2                                    1
2-4 = NEGATIVE                        0
2-2 = 0                                      1
0-1 = NEGATIVE                        0

We continue this till we have subtracted 2^0 (this helps determine even/odd numbers).

234 in binary is therefore 11101010.

That's it for this week!