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INTERFACES IN COMPUTER AND USB IN DETAIL

IN COMPUTING, AN INTERFACE IS A SHARED BOUNDARY ACROSS WHICH TWO SEPARATE COMPONENTS OF A COMPUTER SYSTEM EXCHANGE INFORMATION. THERE ARE SEVERAL DIFFERENT TYPES OF INTERFACES, CATEGORIZED BASED ON THEIR PURPOSE AND WHERE THEY ARE USED. HERE'S A BREAKDOWN OF THE MAIN TYPES: 1. USER INTERFACES (UI) THESE ALLOW HUMANS TO INTERACT WITH COMPUTERS. GRAPHICAL USER INTERFACE (GUI): USES WINDOWS, ICONS, MENUS, AND POINTERS (E.G., WINDOWS, MACOS, GNOME). COMMAND-LINE INTERFACE (CLI): USERS TYPE COMMANDS INTO A CONSOLE OR TERMINAL (E.G., LINUX TERMINAL, COMMAND PROMPT). TOUCH USER INTERFACE: USES TOUCHSCREENS (E.G., SMARTPHONES, TABLETS). VOICE USER INTERFACE (VUI): INTERACTS VIA SPOKEN COMMANDS (E.G., SIRI, ALEXA). NATURAL USER INTERFACE (NUI): USES GESTURES, GAZE, OR BIOMETRICS (E.G., KINECT, EYE-TRACKING). 2. HARDWARE INTERFACES ENABLE COMMUNICATION BETWEEN PHYSICAL DEVICES. PERIPHERAL INTERFACES: CON...
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DIGITAL IMAGES, DIGITAL IMAGES QUALITIES A SHORTNOTE

DIGITAL IMAGES, DIGITAL IMAGES QUALITIES A SHORT NOTE:

THE FOLLOWING TERMINOLOGY IS HELPFUL TO KNOW WHEN LEARNING ABOUT THE TYPES OF DIGITAL IMAGES.

 

TONAL RANGE – IT IS ALSO CALLED DYNAMIC RANGE.  THIS TERM REFERS  TO DARK TO LIGHT RANGES OR VALUES IN AN IMAGE USUALLY REFERED TO AS SHADOWS MIDTONES AND HIGHLIGHTS.  AN IMAGE THAT CONTAINS ALL OR MOST OF THE POSSIBLE TONES, RATHER THAN A SMALLER PORTION OF THE POSSIBLE TONES, USUALLY APPEARED  MORE DETAILS AND SAID TO HAVE LARGER TONAL RANGE OR DYNAMIC RANGE.   TONES MAY ALSO REFFERED TO AS LEVELS OR INTENSITIES.

 

BRIGHTNESS LIGHTNESS LUMINOSITY LUMINANCE   -THESE TERMS REFER TO DARK TO LIGHT TONAL CHARACTERISTICS, AS OPPOSED TO COLOR CHARACTERISTICS.  THEY CAN BE THOUGHT OF AS DESCRIBING THE IMAGE AS IF THE COLORS HAD BEEN CONVERTED TO BLACKS GRAYS AND WHITES

 

HUE – IT IS IDENTIFIED BY THE NAME OF THE COLOR SUCH AS RED ORANGE AND GREEN.  THE LIGHTNESS OR THE DARKNESS OF THE COLOR IS THOUGHT OF SEPARATE FROM THE HUE.  HUE CAN BE MEASURED ON LOCATION ON THE STANDARD COLOR WHEEL AND EXPRESSED A DEGREE AS BETWEEN 0 DEGREE TO 360 DEGREE.

 

COLOR – IN MANY INSTANCES OF PHOTOSHOP COLOR REFERS TO THE HUE AS A SEPARATE QUALITY FROM DARK TO LIGHT TONAL QUALITIES.  FOR EXAMPLE IT IS COMMON TO SAY “THE COLOR IN THE IMAGE IS GOOD AND ITS NEED TO BE STAY THE SAME BUT I NEED TO MAKE THE CHANGES IN LUMINOSITY.”

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