データ量計算の事始め【情報Ⅰ】

==Related Topics==    • データ量・ビットの基本【情報Ⅰ】   (Bit and Byte Basics)    • 音のデジタル化【情報Ⅰ】      • 画像のデジタル化【情報Ⅰ】   ============ [Question 1] A digital camera can capture images with 1,600 pixels wide and 1,200 pixels high, with 24-bit color information. If this camera has 8MB of recording memory, how many images can it record? Assume the images are uncompressed. (Fundamental Information Technology Engineer Examination, Fall 2006, Morning Question 26) [Question 2] A color video is played back and displayed at 30 frames per second using the entire screen of a PC with a 300,000-pixel display and a 256-color display. Which of the following is closest to the amount of image data (in MB) displayed per minute? Assume the data is uncompressed. (Fundamental Information Technology Engineer Examination, Spring 2007, Morning Question 24) [Question 3] If a 60-minute audio signal (monaural) is digitized using the PCM format with a sampling frequency of 44.1 kHz and a quantization bit depth of 16 bits, how many megabytes of data will it contain? Assume no data compression is performed. (Fundamental Information Technology Engineer Examination, Spring 2012, Morning Question 26) =========== ■List of Easy-to-View Videos■https://johono.site/informatics1_lecv... ■Website■https://johono.site =========== Let's look at how to calculate the data volume of sound, images, and video. High school Information Technology I covers digitization, and questions about data volume are common. These questions vary, including the amount of data per image, the amount of video data, the amount of audio data, and the amount of text data. The questions themselves also vary. Let's first look at some common questions. =========== 0:00 Greetings 0:31 If you're asked to calculate the amount of data 1:18 Image data volume 6:23 Video data volume 12:10 Sound data volume 20:56 Ending credits =========== #InformationI #ComputerScience #InformationScienceExplanationClass