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Why you use 11.0592mhz crystal in place of 12mhz in 89c51?
The 11.0592 MHz crystal is commonly used with the 89C51 microcontroller because it provides an exact frequency that allows for accurate baud rate generation for serial communication. This frequency is particularly useful as it enables the generation of standard baud rates such as 9600, 19200, and 115200 baud without introducing timing errors. In contrast, a 12 MHz crystal would not yield the same precision for these common baud rates, leading to potential communication issues. Thus, the 11.0592 MHz crystal is preferred for reliable serial communication.
Why 1030 MHz and 1090 MHz only?
The frequencies of 1030 MHz and 1090 MHz are specifically allocated for air traffic control and aircraft transponder communication due to their optimal propagation characteristics, which allow for reliable long-range communication with minimal interference. The 1030 MHz frequency is used for interrogating transponders, while 1090 MHz is used for transmitting replies. These frequencies are part of the L-band spectrum, which is well-suited for radar and surveillance applications, ensuring effective tracking and identification of aircraft.
Why 11.0592 MHZ frequency is used with at89c51?
It gives the possibility to generate several precise baudrates for serial communications. With 12 MHz you introduce small errors that will however be acceptable for hobbyists.
What frequency range of tetra?
Tetra communication systems typically operate within the frequency range of 380-400 MHz for uplink and 390-410 MHz for downlink transmissions.
How many cubic meter in a 48 x 48 x 48 crate?
110592
In telephone communication is serial or parallel communication?
parallel
What are the common uses of the 446 MHz frequency band?
The 446 MHz frequency band is commonly used for walkie-talkies, two-way radios, and other short-range communication devices.
Suggest a possible communication channel for transmission of a message signal of bandwidth of 5 MHz?
sky waves
What is a serial wire used for?
A serial wire can be used for several uses. Mainly, it's used for basic communication between different devices. The main advantage is the fact that serial communication can use only three wires. Parallel requires several more, typically eight, or sixteen, plus signalling, and traditionally is faster. But for simple communication between devices, which could be computers or other devices, serial communication can simplify things. Serial communication can also be used for great distances. The telegraph was serial communication. Hence "AT&T"!
What are the waves used in zigbee communication?
ZigBee operates in the industrial, scientific and medical (ISM) radio bands: 868 MHz in Europe, 915 MHz in the USA and Australia, and 2.4 GHz in most jurisdictions worldwide.
What are two speeds of RIMM?
he rating for RIMM memory is based on the maximum theoretical bandwidth (in MHz) and included speed ratings of 800 MHz, 1066 MHz, 1200 MHz, 1333 MHz, and 1600 MHz.
Will GSM 850 900 1800 1900 MHz work in US?
In North America, GSM operates on the primary mobile communication bands---850 MHz and 1900 MHz. GSM-1900 is the primary band used in urban areas with 850 as a backup, and GSM-850 being the primary rural band.
