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1983: Zilog Systems 8000 Series Two featured a faster 11.1 MHz Z8001B processor with 32 KB of cache memory, available in three models with 512 KB of RAM expandable to 2 MB in the base model and 4 MB in the other models, with prices for minimal configurations ranging from $19,950 to $29,950.
The PC-8000 series (Japanese: PC-8000シリーズ, Hepburn: Pī-Shī Hassen Shirīzu) is a line of personal computers developed for the Japanese market by NEC. The PC-8001 model was also sold in the United States [ 5 ] [ 6 ] and Canada as the PC-8001A.
The term programmable communicating thermostat (PCT) is used by the California Energy Commission to describe programmable thermostats that can receive information wirelessly. The first version of the PCT introduced in the 2008 building standards proceeding also required that PCTs allow temperature control during emergency events to avoid blackouts.
Honeywell electronic thermostat in a store. Heating and cooling losses from a building (or any other container) become greater as the difference in temperature increases. A programmable thermostat allows reduction of these losses by allowing the temperature difference to be reduced at times when the reduced amount of heating or cooling would not be objectionable.
The gas savings for manual thermostat replacements (10% per thermostat) was found to be larger than for programmable thermostat replacements (8% per thermostat). The difference in electricity savings between homes whose prior equipment was a manual thermostat or programmable thermostat was found to be minimal. [1]
Baseboard heaters will especially benefit from a programmable thermostat which is capable of continuous control (as are at least some Honeywell models), effectively controlling the heater like a lamp dimmer, and gradually increasing and decreasing heating to ensure an extremely constant room temperature (continuous control rather than relying ...
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Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case. Using switches or knobs, attached fans can have their speeds adjusted by one of the above methods.