1) "5400" -- As to 5400 rpm

The 7400 chip, containing four NANDs. The second line of smaller numbers (7645) is a date code; this chip was manufactured in the 45th week of 1976. The N suffix on the part number indicates PDIP packaging. 74HC595 Shift registers on a PCB
The 7400 series of TTL integrated circuits are historically important as the first widespread family of IC logic. It was used to build the mini and mainframe computers of the sixties and seventies. Several generations of pin-compatible descendants of the original family has since been de-facto standard-components* for more than 40 years, and seen use in many types of products and equipment besides computers.^{[citation needed]}

The 7400 series contains hundreds of devices that provide everything from basic logic gates, flip-flops, and counters, to special purpose bus transceivers and Arithmetic Logic Units (ALU). Specific functions are described in a list of 7400 series integrated circuits.

Today, cheap surface-mounted CMOS versions of the 7400 series are used in consumer electronics and for glue logic in computers and industrial electronics, along with modern variants of the equally important 4000 series. The fastest parts are surface-mount only, but hole-mounted devices, which are very useful for rapid breadboard-prototyping and education, are also readily available.

The 14-pin DIP shown to the right is an example of a 7400 part. The chip contains four two-input NAND gates. Each gate uses two pins for input and one pin for its output, the two additional contacts supply power (+5 V) and connect the ground. (The former Soviet Union manufactured the K155ЛA3 which was pin-compatible with the 7400 part available in the United States. ^{[citation needed]})

While designed as a family of digital logic, it was not unusual to see TTL-chips in analog circuits like Schmitt triggers, various generators or voltage stabilizers.^{[citation needed]} Like the 4000 series, the newer CMOS versions of the 7400 series are also perfectly usable as analog (often audio) am..."

2) "Rpm" -- As to 5400 rpm
rpm
Function: abbreviation
revolutions per minute
Pronunciation Symbols

Revolutions per minute (abbreviated rpm, RPM, r/min, or r·min⁻¹) is a unit of frequency, commonly used to measure rotational speed, in particular in the case of rotation around a fixed axis. It represents the number of full rotations something makes in one minute. The International System of Units (SI) unit for rotational velocity is the radian per second (rad·s⁻¹).

1 Examples

2 Symbols other than RPM

3 Compared to frequency and angular speed

4 See also

5 External links

6 References

The sweep of a second hand of an analogue clock or watch rotates at an average of 1 rpm.

Gramophone (phonograph) records typically rotate steadily at 16, 33⅓, 45 or 78 rpm.

Audio CD rotation rates vary from about 500 rpm when reading the innermost data track, to 180 rpm when reading tracks near the outer edge.

A washing machine's drum may rotate at 500 to 1800 rpm during the spin cycles.

An automobile's engine typically varies between 700 and 7000 rpm (though there are certain cars that can rev as high as 11,000 rpm.

A piston aircraft engine typically rotates between 2000 and 3000 rpm.

A computer's hard drive rotates at 3600, 4200, 5400, or 7200 rpm on IDE types and 10 000 or 15 000 rpm on some SATA and SCSI and Fibre Channel drives.

A racing car engine's limit is close to 20 000 rpm in Formula One.^[1]

A 52× CD-ROM drive can rotate a CD as fast as 10 350 rpm.

A Zippe-type centrifuge for enriching uranium spins at 90 000 rpm or faster.^[2]

Gas turbine engines rotate at tens of thousands of rpm. JetCat model aircraft turbines are capable of over 100 000 rpm with th..."

Further Data On Term for 5400 rpm
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