HVAC COOLING LOAD CALCULATIONS AND PRINCIPLES. Sensible Heat Gain â is the energy added to the space by conduction, convection and/or radiation. Latent Heat Gain â is the energy added to the space when moisture is added to the space by means of vapor.
Rise of USB. Developed by a consortium of companies made up of Intel, Compaq, Microsoft, Sony, DEC, IBM, and Northern Telecom, the Universal Serial Bus (USB) was introduced in January 1996. At that time, the USB 1.0 standard was capable of delivering a transfer rate of 12 Mbit/s. In April of 2000, USB 2.0 was introduced with a transfer rate of 480 Mbit/s. More recently, the USB 3.0 standard reaches transfer rates of 4.8 Gbit/s.
Work on the drive for what became the media of the world's first floppy disk drive began in 1967 at a San Jose (CA) IBM facility. First introduced into the market as 8-inch floppy disks in 1972, they were followed by 5Â¼-inch disks in 1976 and 3Â½-inch disks in 1982. A number of varient sizes with limited market success were also available.