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.
This is the IBM Simon Personal Communicator, often referred to as the first smartphone ever. A prototype of it was introduced in 1992, but it wasn't until two years later when BellSouth Cellular released the handset in the U.S. for $899 on a 2-year contract or $1099 without commitment.