|
Hp 39g
HP 39/40 series are graphing calculators from Hewlett-Packard, the successors of HP 38G. The series consists of six calculators, which all have algebraic entry modes, and can perform numeric analysis together with varying degrees of symbolic calculation. All calculators in this series are aimed at high school level students and are characterized by their ability to download (via cable or infrared) APLETs or E-lessons. These are programs of varying complexity which are generally intended to be used in the classroom to enhance the learning of mathematics by the graphical and/or numerical exploration of concepts. HP 39g The HP 39g (F1906A) was released in 2000. Basic characteristics: * CPU: 4 MHz Yorke (Saturn core) * Communication: Proprietary infrared, serial RS-232 (serial port). * Memory: 256 KB RAM * Screen resolution: 131 × 64 pixels * Includes a hard cover * Limited symbolic equation functionality. HP 40g HP 40g (F1907A) was released in 2000 in p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphing Calculator
Graphing Calculator may refer to: * Graphing calculators, calculators that are able to display and/or analyze mathematical function graphs * NuCalc, a computer software program able to perform many graphing calculator functions * Grapher, the Mac OS X successor to NuCalc {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ACT (test)
The ACT (; originally an abbreviation of American College Testing) Name changed in 1996. is a standardized test used for college admissions in the United States. It is administered by ACT, Inc., a for-profit organization of the same name. The ACT test covers four academic skill areas: English, mathematics, reading, and scientific reasoning. It also offers an optional direct writing test. It is accepted by many four-year colleges and universities in the United States as well as more than 225 universities outside of the U.S. The main four ACT test sections are individually scored on a scale of 1–36, and a composite score (the rounded whole number average of the four sections) is provided. The ACT was first introduced in November 1959 by University of Iowa professor Everett Franklin Lindquist as a competitor to the Scholastic Aptitude Test (SAT). The ACT originally consisted of four tests: English, Mathematics, Social Studies, and Natural Sciences. In 1989, however, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP40 CAS
Erable is a computer algebra system (CAS) for a family of Hewlett-Packard graphing scientific calculators of the HP 40, 48 and HP 49/50 series. History Originally named ''ALGB'' in 1993, it was developed by the French mathematician for the HP 48SX. Over time, the system integrated a lot of functionality from another math pack for the HP 48 series, ALG48 by Mika Heiskanen and Claude-Nicolas Fiechter. At some point, ''ALGB'' was renamed into ''Erable'', a French play-on-words on another CAS named Maple. Compatible with the HP 48S, 48SX, 48G, 48GX, and 48G+, Erable became one of the "must-have" software packages to be installed by advanced users of these calculators. When Hewlett-Packard developed the HP 49G in 1999, the Erable and ALG48 packages became an integral part of the calculator's firmware, now just named ''HP49 CAS''. As HP CAS it also showed up in the HP 40G, 40gs, 49g+, 48gII and 50g and was maintained by Parisse up to 2006 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP40GS
HP4 or variant, may refer to: * HP4, a postcode for Berkhamsted, see HP postcode area * hP4, a Pearson symbol * ''Harry Potter and the Goblet of Fire ''Harry Potter and the Goblet of Fire'' is a fantasy novel written by British author J. K. Rowling. It is the fourth novel in the ''Harry Potter'' series. It follows Harry Potter (character), Harry Potter, a wizard in his fourth year at Hogwar ...'', the fourth Harry Potter novel * Harry Potter and the Goblet of Fire (film), the fourth Harry Potter film * Handley Page Type D a.k.a. ''H.P.4'', an airplane * HP-4, a glider designed by Richard Schreder * HP4, a type of photographic stock, see Ilford HP * HP4, a version of the BMW S1000RR produced between 2013 and 2014. See also * HP (other) {{Letter-Number Combination Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TTL Serial
TTL may refer to: Photography * Through-the-lens metering, a camera feature * Zenit TTL, an SLR film camera named for its TTL metering capability Technology * Time to live, a computer data lifespan-limiting mechanism * Transistor–transistor logic, a family of integrated-circuit digital logic ** Differential TTL, a serial signaling standard based on TTL * Turtle (syntax) In computing, Terse RDF Triple Language (Turtle) is a syntax and file format for expressing data in the Resource Description Framework (RDF) data model. Turtle syntax is similar to that of SPARQL, an RDF query language. It is a common data for ..., a computer data format used in semantic web technologies Other uses * Taiwan Tobacco and Liquor, a state-owned manufacturer * " TTL (Time to Love)", a single by South Korean girl group T-ara and boy band Supernova {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S3C2410A
Samsung has a long history of designing and producing system-on-chips (SoCs) and has been manufacturing SoCs for its own devices as well as for sale to other manufacturers. The first Samsung SoC, the ''S3C44B0'', was built around an ARM7 CPU which operated at 66 MHz clock frequency. Later, several SoCs (S3C2xxx) containing an ARM9 CPU were produced. For more information on Samsung's current SoCs, see Exynos The Samsung Exynos (stylized as SΛMSUNG Exynos), formerly Hummingbird (), is a series of ARM architecture, Arm-based System on a chip, system-on-chips developed by Samsung Electronics' System LSI division and manufactured by Samsung Foundry. I .... List of historical Samsung SoCs References {{DEFAULTSORT:Samsung system on a chips, List of Lists of computer hardware System on a chip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IrDA
IrDA is a wireless standard designed for exchanging data using infrared (IR). Infrared ports for this purpose have been implemented in portable electronic devices such as mobile telephones, laptops, cameras, printers, and medical devices. The main characteristics of this kind of wireless optical communication are physically secure bidirectional data transfer, line-of-sight and very low bit error rate, using point-and-shoot principles. IrDA has been made dormant by newer improved technologies like Bluetooth. History and usage The protocols and specifications of the standard were developed by the Infrared Data Association (abbreviated IrDA, giving the name to the standard itself), an industry-driven interest group that was founded in 1994 by around 50 companies. IrDA was popular on PDAs, laptops and some desktops from the late 1990s through the early 2000s. However, it has been displaced by other wireless technologies such as Bluetooth, and Wi-Fi, favored because they don't ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XModem
XMODEM is a simple file transfer protocol developed as a quick hack by Ward Christensen for use in his 1977 MODEM.ASM terminal program. It allowed users to transmit files between their computers when both sides used MODEM. Keith Petersen made a minor update to always turn on "quiet mode", and called the result XMODEM. XMODEM, like most file transfer protocols, breaks up the original data into a series of " packets" that are sent to the receiver, along with additional information allowing the receiver to determine whether that packet was correctly received. If an error is detected, the receiver requests that the packet be re-sent. A string of bad packets causes the transfer to abort. XMODEM became extremely popular in the early bulletin board system (BBS) market, largely because it was simple to implement. It was also fairly inefficient, and as modem speeds increased, this problem led to the development of a number of modified versions of XMODEM to improve performance or address ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kermit (protocol)
Kermit is a computer file transfer and management protocol and a set of communications software tools primarily used in the early years of personal computing in the 1980s. It provides a consistent approach to file transfer, terminal emulation, script programming, and character set conversion across many different computer hardware and operating system platforms. Technical The Kermit protocol supports text and binary file transfers on both full-duplex and half-duplex 8-bit and 7-bit serial connections in a system- and medium-independent fashion, and is implemented on hundreds of different computer and operating system platforms. On full-duplex connections, a sliding window protocol is used with selective retransmission which provides excellent performance and error recovery characteristics. On 7-bit connections, locking shifts provide efficient transfer of 8-bit data. When properly implemented, as in the Columbia University Kermit Software collection, its authors claim perfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USB Mini-B
The initial versions of the USB standard specified connectors that were easy to use and that would have high life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of the USB standard gave rise to another family of connectors to permit additional data links. All versions of USB specify cable properties. Version 3.''x'' cables, marketed as ''SuperSpeed'', added a data link; namely, in 2008, USB 3.0 added a full-duplex lane (two twisted pairs of wires for one differential signalling, differential signal of serial data per direction), and in 2014, the USB-C specification added a second full-duplex lane. USB has always included some capability of providing power supply, power to peripheral devices, but the amount of power that can be provided has increased over time. The modern specifications are called ''USB Power Delivery'' (''USB PD'') and allow up to 240 watts, with or without data communications capabili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ARM920T
ARM9 is a group of 32-bit RISC ARM processor cores licensed by ARM Holdings for microcontroller use. The ARM9 core family consists of ARM9TDMI, ARM940T, ARM9E-S, ARM966E-S, ARM920T, ARM922T, ARM946E-S, ARM9EJ-S, ARM926EJ-S, ARM968E-S, ARM996HS. ARM9 cores were released from 1998 to 2006, and no longer recommended for new IC designs; newer alternatives are ARM Cortex-M cores. Overview With this design generation, ARM moved from a von Neumann architecture (Princeton architecture) to a (modified; meaning split cache) Harvard architecture with separate instruction and data buses (and caches), significantly increasing its potential speed. Most silicon chips integrating these cores will package them as modified Harvard architecture chips, combining the two address buses on the other side of separated CPU caches and tightly coupled memories. There are two subfamilies, implementing different ARM architecture versions. Differences from ARM7 cores Key improvements over ARM7 cores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
