We can often hear the terms bytes, kilobytes, megabytes as memory of computers (RAM or capacities of hard disk). Well, of course, this was during the old days; everything now is at least 1 gigabyte. The term kilo is often associated with 103 = 1000 (1 kilometer = 1000 meters) and the term mega is often associated with 106 = 1 000 000 (1 megaton = 1 million tons).
However, in reality, numbers in the field of computers use binary digits, so we are actually using the base 2 instead of base 10. Base 10 is the number system that we use every day.
When we say kilobyte in computers, we generally mean 210 or 1024 bytes (instead of 103 bytes) and when we mean 1 megabyte, we really mean (210)(210) = 220= 1 048 576 bytes.
To avoid the confusion, new units were introduced in 1998, the kibibytes and mibibytes. One kibibyte is now officially 1024 bytes and 1 mibibyte is equal to 1,048,576. That makes I kilobyte = 1000 bytes and 1 megabyte = 1 000 000 bytes.
The usage of megabyte is still not consistent though. In measuring hard disk space, 103 x 103 = 1 000 000 is used. In measuring RAM, 210 x 210 = 1 048 576 is used. In flash drives and old floppy disks, 210 x 103 = 1 024 000 is used.
I’ve been searching lately for videos on introduction to higher mathematics and I found one series which is particularly easy to follow and with excellent explanation. The video series is titled Introduction to Higher Mathematics by Bill Shillito. The series discusses the topics like logic, set theory, relations and functions, modular arithmetic, etc. which are needed before taking a mathematics course. I have already watched seven of these videos and I highly recommend them especially for Grade 12 and undergraduate students who are planning to take or already taking mathematics and computer science courses and related fields.
Below are the titles of the videos in the series.. Continue reading
I am currently on vacation and have no time to write, but I remember watching the video below years ago after sharing 3 Rules to Spark Learning last month. This video was a lecture by Sir Ken Robinson at TED titled How School Kills Creativity. I think it is a must watch for teachers, educators, and policy makers in education.
My favorite quote in this video: “If you’re not prepared to be wrong, you will never come up with anything original.”
He also had a great lecture titled Changing Education Paradigms.