Put a voltage divider between Vout and Vadjust pins. See page 9 of the datasheet from National's site.
The strobe pin on the LM311 is used to disable the output, so that multiple 311's can be ganged together, with only one being turned on at a time. It is also used to adjust the balance of the device.
First of all that's an incomplete question, in fact it could hardly even be called a question. Nevertheless I will attempt to answer what I think the question might be. A Frequency to Voltage converter simply converts a frequency to a voltage as the name would imply. The voltage output will vary linearly with the frequency input (assuming it was designed properly). They can be useful in devices such as tachometers or speedometers. Here's one example of a such an IC: http://www.national.com/mpf/LM/LM2907.html
Linear Monolithic
The LM380 is a small 2.5W mono amplifier. The "LM" in it's name is the standard prefix that National Semiconductors use for their linear circuits. These days, you can find LM380s manufactured by a wide variety of manufacturers.
LM stand for Liner Monolithic ic that is the National Instrunt perfix, I My right
Full form of LM in any IC like LM317 is linear monolithic
no it's not a microcontroller and lm 324 is quad low power comparator...
LM stands for "Linear Monolithic"
It's a prefix of the IC products of 'Linear Monolithic' category of National semiconductors.
limiting magnitude
LM is a manufacturer's code--all LM chips were made by National Semiconductor. Similarly, SN chips were made by Texas Instruments.
A: An lm317 is a negative 1.25v regulator
linear monolithic
The "LM" stands for Linear Monolithic" and is just part of the part-number that National decided to use for this famous timer IC. The LM prefix is still used for a lot of medium complexity analog chips, like regulators and op-amps.
The non-inverting pins of the LM393 are 3 and 5.
A 2N3904 is the one in this package.