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• Megabytes, Gigabytes, Terabytes are usually used in the world of computing to describe disk space, or data storage space, and system memory.
• A Bit is the smallest unit of data that a computer uses and can be used to represent two states of information such as Yes or No.
• A Byte is equal to 8 bits and can represent 256 states of information, for example, numbers and letters.
• A Byte could be equal to a word.
• 100 bytes could equal an average sentence.
• A Kilobyte is 1024 bytes and would be equal to this paragraph you are reading whereas 100 kilobytes would be equal to an entire page.
• A Megabyte is 1024 kilobytes and in the early days of computing, a megabyte was considered to be a large amount of data.
• These days with a 500 GB hard drive on computer being common, a megabyte doesn’t seem like much anymore.
• A Gigabyte is 1024 megabytes and is still a very common term used these days when referring to disk space or drive storage.
• 1GB could hold the contents of about 10 yards of books on a shelf.
• 100 gigabytes could hold the entire library floor of academic journals.
• A Terabyte is approximately one trillion bytes, or 1024 GB and can hold 1000 copies of Encyclopedia Britannica.
• A Terabyte could also hold about 300 hours of good quality videos.
• A Petabyte is 1024 terabytes or about 1 million GB and can hold approximately 20 million 4-door filing cabinets full of text.
• An Exabyte is 1024 petabytes or about 1 trillion GB and can hold approximately 20 trillion 4-door filing cabinets full of text.
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• An Exabyte is approximately 1 Billion GB Zettabyte A zettabyte is approximately 1024 Exabyte YottabyteApproximately 1024 Zettabytes Brontobyte Approximately 1024 Yottabytes Geopbyte Approximately 1024 Brontobytes CONVERSIONS 1 bit (binary digit) 8 bits 1 byte 1024 bytes 1 kilobyte 1024 kilobytes 1 megabyte 1024 mb 1 gigabyte 1024 gb 1 terabyte 1024 terabyte 1 petabyte 1024 perabytes 1 exabyte 1024 exabyte 1 zettabytes 1024 zettabytes 1 yottabyte 1024 yottabytes 1 brontobyte 1024 brontobytes 1 geopbyte Lesson 3 Activity Sheet 2.2.3 Perform Calcul
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• Within a computer, information is represented and stored in a digital binary format.
• The term bit is an abbreviation of binary digit and represents the smallest piece of data.
• Humans interpret words and pictures; computers interpret only patterns of bits.
• A bit can have only two possible values, a one digit (1) or a zero digit (0).
• A bit can be used to represent the state of something that has two states.
• For example, a light switch can be either On or Off; in binary representation, these states would correspond to 1 and 0, respectively.
• Computers use binary codes to represent and interpret letters, numbers and special characters with bits.
• A commonly used code is the American Standard Code for Information Interchange (ASCII).
• With ASCII, each character is represented by a string of bits.
• Capital letter: A = 01000001 Number: 9 = 00001001 Special character: # = 00100011 each group of eight bits, such as the representations of letters and numbers, is known as a byte.
• Codes can be used to represent almost any type of information digitally: computer data, graphics, photos, voice, video, and music.
• In binary, capital letters are represented as A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.
• Lower case letters are represented as a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z.
• Number and symbol are represented as 01000001, 01100001, 00000001, 01000010, 01100010, 00000010, 01000011, 01100011, 00000011, 01000100, 01101000, 00001000, 01001001, 01101001, 00001001, 01001010, 01101010, 00001010, 01001011, 01101011, 00001011, 01001100, 01101100, 00001100, 01001101, 01101101, 00001101, 01001110, 01101110, 00001110, 01001111, 01101111,
• Within a computer, information is represented and stored in a digital binary format.
• The term bit is an abbreviation of binary digit and represents the smallest piece of data.
• Humans interpret words and pictures; computers interpret only patterns of bits.
• A bit can have only two possible values, a one digit (1) or a zero digit (0).
• A bit can be used to represent the state of something that has two states.
• For example, a light switch can be either On or Off; in binary representation, these states would correspond to 1 and 0, respectively.