Short for American Standard Code for Information Interexchange, ASCII is a standard that assigns letters, numbers, and other characters in the 256 slots available in the 8-bit code. The ASCII decimal (Dec) number is created from binary, which is the language of all computers. As shown in the table below, the lowercase "h" character (Char) has a decimal value of 104, which is "01101000" in binary. ASCII was first developed and published in 1963 by the X3 committee, a part of the ASA (American Standards Association). The ASCII standard was first published as ASA X3.4-1963, with ten revisions of the standard being published between 1967 and 1986. The idea of ASCII is a subset of Unicode, the relationship between uppercase and lower case letters and the need for a common data encoding system are also discussed. What might be the consequences if we didn’t have a common method of encoding? Everything we type, listen to, and watch on computers are ultimately represented as numbers. Other computing devices (such as gaming consoles) work on exactly the same principle -that means the controls on joysticks etc also represent data as numbers. However, in a typical computer system, the memory is made of unit cells and each individual cell contains 8 bits (byte). Hence, even though ASCII needs only 7 bits to encode a character, it is stored as 8 bit by keeping first bit 0 (MSB). Hence, the actual bit-width of ASCII is 8. The values of the characters in HELLO text in the hexadecimal representation are 48 45 4C 4C 4F. What do you think might happen if every computer had its own way of encoding? Say my computer thought “A” was 97, but another computer manufacturer decided that “A” was represented by 200. Or my game controller sent an “accelerate” command as a 300, and another game controller’s 300 was the equivalent of a stop. What could be the impacts or consequences of these inconsistencies? Colors RGB. Data in Colors. This page lets you play with the RGB scheme, combining red, green, and blue light to make any color. http://web.stanford.edu/class/cs101/image-rgb-explorer.html How can shades of grey be made with RGB? - Develop a color palette of 4/6 colors for a social media header/blog/Instagram page. Create a table with the colors in one column, and the corresponding RGB values in another column. 1. What might be some general observations about channel values and the color displayed? Answers might include: - The higher the number, the lighter the color displayed in the channel; - The lower the number, the darker the color displayed in the channel; - When the values for r,b,g are equal, the end color is a neutral color;Imagine you had 2 channels, each with only 3 possible values (instead of 255). The following table provides a way to imagine this hypothetical scenario: CHANNEL 1 A1 A2 A3 CHANNEL 2 B1 B2 A B3 2. RGB encoding allows us to use numbers to represent colors.This also allows us to communicate color values easily to each other. You might share examples of situations where color values need to be communicated. 200