hop

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hop,

herbaceous perennial vine of the family Moraceae (mulberrymulberry,
common name for the Moraceae, a family of deciduous or evergreen trees and shrubs, often climbing, mostly of pantropical distribution, and characterized by milky sap. Several genera bear edible fruit, e.g.
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 family), widely cultivated since early times for brewing purposes. The commercial hop (Humulus lupulus) is native to Eurasia but is now grown in many temperate regions, notably England, Germany, the United States, South America, and Australia. The conelike mature female flowers, called hops, are borne on different plants from the male; their loose scales contain lupulin, a yellow resinous powder that is added to beer to impart a bitter flavor and is used medicinally as a tonic and soporific. Oil of hops is used for some perfumes, and the hop stem is used for fiber. The fruit of the unrelated hop tree (Ptelea trifoliata) of North America is occasionally used as a substitute for hops. Hops are classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Urticales, family Moraceae.

hop

[häp]
(botany)
Humulus lupulus. A dioecious liana of the order Urticales distinguished by herbaceous vines produced from a perennial crown; the inflorescence, a catkin, of the female plant is used commercially for beer production.
(communications)
A single reflection of a radio wave from the ionosphere back to the earth in traveling from one point to another.

hop

hop
i. The travel of a radio wave to the ionosphere and back to earth. The number of hops a radio signal has experienced is usually designated by the expression “one hop,” “two hop,” “multihop,” etc. The number of hops is called the order of reflection.
ii. A very short flight.
iii. As used in electronic warfare, a jump from one EM (electromagnetic) frequency to another by an ECCM (electronic counter-countermeasures) subsystem.

hop

1
Old-fashioned informal a dance, esp one at which popular music is played

hop

2
Obsolete slang opium or any other narcotic drug

hop

3
1. any climbing plant of the N temperate genus Humulus, esp H. lupulus, which has green conelike female flowers and clusters of small male flowers: family Cannabiaceae (or Cannabidaceae)
2. hop garden a field of hops

hop

(messaging)
One point-to-point transmission in a series required to get a message from point A to point B on a store and forward network. On such networks (including UUCPNET and FidoNet), an important inter-machine metric is the hop count of the shortest path between them. This can be more significant than their geographical separation.

Each exclamation mark in a bang path represents one hop.

hop

(networking)
One direct host-to-host connection forming part of the route between two hosts in a routed network such as the Internet. Some protocols place an upper limit on the hop count in order to detect routing loops.

hop

(jargon, networking)
To log in to a remote computer, especially via rlogin or telnet. "I'll hop over to foovax to FTP that."

hop

The link between two network nodes. See hop count and hop off.
References in periodicals archive ?
Frequency Hopping can be added as a field upgrade option for existing MicroWAVE6000 customers.
The Frequency Hopping option is patent pending Bluetooth is a trademark owned by Telefonaktiebolaget LM Ericsson, Sweden.
The KEELOQ code hopping methodology circumvents code capturing since a different code is used with each successive transmission and a previous code is never accepted again.
manufactures the PICmicro(TM) family of 8-bit RISC-based microcontrollers - with OTP, FLASH, and ROM memory technologies; serial EEPROMs and related specialty memory products; and KEELOQ(R) code hopping devices.
The key is used to generate a 32-bit hopping code to practically eliminate the possibility of unwanted access from code grabbing and scanning.
is a leading supplier of field-programmable 8-bit microcontrollers, complementary ASSPs, related specialty memory products and KEELOQ(R) code hopping devices for high-volume embedded control applications in the consumer, automotive, office automation, communications and industrial markets.
In November 1995, Microchip acquired the KEELOQ code hopping technology and patents and patent applications developed by Nanoteq of South Africa, along with the worldwide marketing rights.
These embedded control products, including the complementary code hopping technology, meet the special design requirements of worldwide OEM customers, such as cost-effectiveness, low power, small footprint and a high level of system integration.
In November, 1995 Microchip acquired the KEELOQ code hopping technology and patents and patent applications developed by Nanoteq of South Africa, along with the worldwide marketing rights.
The hopping code methodology, which has several patents pending, circumvents code capturing since a different code is used with each successive transmission.
The Keeloq hopping code technology complements Microchip's long-term strategy to focus on broad vertical markets with high-performance low-cost standard products," said Steve Sanghi, president and CEO of Microchip.
The Keeloq hopping code technology has enjoyed tremendous success in a variety of security applications," said Dr.