Reviews User defined Functions

Texas Instruments TI-84 Plus Graphics Calculator, Black (Renewed)

  • Real and complex numbers calculated to 14-digit accuracy and displayed with 10 digits plus a 2-digit exponent. Graphs 10 rectangular functions, 6 parametric expressions, 6 polar expressions, and 3 recursively-defined sequences. Up to 10 graphing functions defined, saved, graphed, and analyzed at one time..
  • Sequence graphing mode shows time series plot, cobweb/stair-step plot, and phase plots. User-defined list names. Lists store up to 999 elements. 14 interactive zoom features. Numeric evaluations given in table format for all graphing modes..
  • Interactive analysis of function values, roots, maximums, minimums, integrals, and derivatives. 7 different graph styles for differentiating the look of each graph drawn. Horizontal and vertical split- screen options. Stores up to 10 - 50x50 matrices..
  • Matrix operations including inverse, determinant, transpose, augment, reduced row echelon form, and elementary row operations. Convert matrices to lists and vice-versa. List-based one- and two-variable statistical analysis, including logistic, sinusoidal, median-median, linear, logarithmic, exponential, power, quadratic polynomial, cubic polynomial, and quartic polynomial regression models..
  • 3 statistical plot definitions for scatter plots, xy-line plots, histog....
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HNZXIB 0.6㎡ Freeze Dryer -35℃ Vacuum Sublimation Dryer with 4L Rotary Vane Vacuum Pump,110V

  • Vacuum Freeze Dryer adopts Tecumseh or Secop, rapid cooling, LCD control system, easy operation, powerful function, stable performance, easy operation, and low noise..
  • The dry room door is made of colorless transparent organic glass, with programmable heating and temperature control functions, you can view the freeze-drying curve and the freeze-drying process can be observed..
  • Matching vacuum pump for pumping vacuum, an international standard KF quick connector connects the vacuum pump..
  • A variety of containers can be carried out on the same freeze dryer: The pre-freeze shelf surface temperature control, The samples freeze-dried can be carried out in the user-defined temperature in the limited temperature of freezing - user-defined samples, high vacuum drying, and can remove capillary bound water molecules..
  • Applicable to the Freeze drying suitable for seafood, wild vegetables, dehydrated vegetables, food, and fruit, also applies to plasma, serum extract, antibodies, etc..
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ICQUANZX Upgraded 60MHz DDS Signal Generator Counter,High Precision Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (60MHz)

  • Arbitrary Waveform Generator adopts large scale FPGA integrated circuit and high speed MCU microprocessor. The internal circuit adopts active crystal oscillator as benchmark. So the signal stability is greatly strengthened..
  • Using Dual-channel DDS signal and TTL electric level output to generate precise, stable, low distortion output signal. includes Sine wave, Square wave, Triangle wave, Sawtooth wave, Pulse wave, white noise, user-defined waveform etc. each channel can be independently set the parameters..
  • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function..
  • Storage feature: You can store 99 groups instrument state parameters set by the user, can be called up to Reproduce. Frequency output of Sine wave can be up to 60MHz. 200MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits.
  • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research..
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Koolertron Upgraded 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (15MHz)

  • Arbitrary Waveform Generator adopts large scale FPGA integrated circuit and high-speed MCU microprocessor. The internal circuit adopts the active crystal oscillator as the benchmark. So the signal stability is greatly strengthened..
  • Using Dual-channel DDS signal and TTL electric level output to generate precise, stable, low distortion output signal. includes Sine wave, Square wave, Triangle wave, Saw toothwave, Pulse wave, white noise, user-defined waveform etc. each channel can be independently set the parameters..
  • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function..
  • Storage feature: You can store 99 groups instrument state parameters set by the user, can be called up to Reproduce.The frequency output of Sine wave can be up to 15MHz. 200MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits.
  • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research..
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Koolertron 60MHz High Precision DDS Signal Generator Counter,Upgraded Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 266MSa/s (60MHz)

  • ..., Partial Sine, CMOS, DC level, Half-wave, Full-Wave, Pos-Ladder, Neg-Ladder, Noise, Exponential Rise, Exponential Fall, Tone, Sine Pulse, Lorentz Pulse, and 60 kinds user defined waveform etc. each channel can be independently set the parameters..
  • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function..
  • Storage feature: You can store 100 groups instrument state parameters set by the user, can be called up to Reproduce. Frequency output of Sine wave can be up to 60MHz. 266MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits.
  • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research..
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Koolertron 15MHz High Precision DDS Signal Generator Counter,Upgraded Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 266MSa/s (15MHz)

  • ..., Partial Sine, CMOS, DC level, Half-wave, Full-Wave, Pos-Ladder, Neg-Ladder, Noise, Exponential Rise, Exponential Fall, Tone, sine pulse, Lorentz Pulse, and 60 kinds user defined waveform etc. each channel can be independently set the parameters..
  • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function..
  • Storage feature: You can store 100 groups instrument state parameters set by the user, can be called up to Reproduce. Frequency output of Sine wave can be up to 15MHz. 266MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits.
  • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research..
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Koolertron 15MHz Embeddable Dual-Channel Function Signal Generator Counter,High Precision DDS Arbitray Waveform Generator Frequency Meter 266MSa/s (15MHz)

  • ..., Partial Sine, CMOS, DC level, Half-wave, Full-Wave, Pos-Ladder, Neg-Ladder, Noise, Exponential Rise, Exponential Fall, Tone, sine pulse, Lorentz Pulse, and 60 kinds user-defined waveform etc. each channel can be independently set the parameters..
  • With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function..
  • Storage feature: You can store 100 groups instrument state parameters set by the user, can be called up to Reproduce. The frequency output of Sine wave can be up to 15MHz. 266MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits.
  • The rear case can be easily disassembled, and there is no interface around the generator for easy installation and embedding into the test bench. The Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research..
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Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform Function Generator Frequency Meter

  • ... Square wave, Triangle wave, Sawtooth wave, Pulse wave, white noise, user-defined waveform etc. each channel can be independently set the parameters.Duty cycle of each channel can be adjusted separately. Precision can be 0.1%..
  • 【Frequency Meter】With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function.The settings allow you to enter up to 20volts.
  • 【Lightweght Compact and Portable】With intuitive control panel, you can easy to control.This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research. This is an important tool for both experts and newcomers.
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LILLIPUT 10.1" FA1016/C IPS FHD 1000:1 HDMI/VGA Supports 4K 30Hz Glass+Glass Technology USA Official Seller VIVITEQ (USA Service Directly)

  • LILLIPUT 10.1" FA1016/C IPS FHD 1000:1 HDMI/VGA Support 4K 30Hz Glass+Glass Technology with Free Desktop Stand by LILLIPUT USA Official Seller VIVITEQ (USA Service Directly).
  • Supports multiple video input interfaces: HDMI, VGA High resolution of 1920x1200 pixels High contrast: 1000:1 Adopt the unique Glass+Glass technology.
  • F1&F2 user-definable buttons to custom auxiliary functions as shortcut Individual adjustments of Brightness, Contrast, Brightness, Saturation, Sharpness and Color Temp, etc..
  • Support Scan, Check Field, Zoom, Freeze, Image Flip functions Equipped with 75mm VESA holes Compatible with sunshade, that can be used under sunlight Built-in high level components to support 7 to 24V power supply voltage Working safely with ultra-low current in any situation.
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WonVon DDS Function Generator, 60MHz Dual-Channel Signal Generator 0.01-100MHz Arbitrary Waveform Pulse FY6900-60M Generator Function Signal Generator

  • FY6900 series Dual-channel Function / Arbitrary waveform generator is a set of Function Signal Generator, Arbitrary Waveform Generator, Pulse Generator, Analog / Digital modulator, VCO, Sweep, Counters and Frequency Meter and other functions in a high Performance, cost-effective, multi-function signal generator. Abundant shortcut keys and graphical user interface simplifies every operation..
  • The standard 3-pin power plug increases the grounding protection and effectively eliminates the leakage current on the BNC terminal.2.4 inch TFT Color LCD with 320×240 resolution, displaying parameters and graphics of the two channels at the same time.The instrument uses 14-bit high-speed D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution.
  • Can output up to 97 groups of functions / arbitrary waveform, contains 33 groups of preset waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, CMOS(0~10V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc..
  • Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192 points * 14bit....
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49 mm DT8 Ultra Smart Watch Wireless Charging Series 8 NFC 2.0 Inch Large Screen 49 mm (GPS Track, Thermometer) for Men and Women Sports Smart Watch IP67 Life Waterproof Wireless Charging

  • Health care functions: Real sleep monitoring, Real Heart rate, Lady assistant, Massager..
  • Sports functions : Breath training, Multi-sport mode..
  • Multimedia : GPS movement tracking, Bluetooth music playback, real-time weather (meteorology), 2 games, voice assistant, stopwatch, alarm clock, flashlight, calculator, brightness adjustment, music remote control, independent ringtones, camera remote control, APP supports languages..
  • Organizational Features : Find phone (to use when connected to a cellphone), multitasking background, always-on option, one-click binding, smart mode and watch mode toggle, 11 menu styles, Bluetooth call, notifications, more than 500 digit sheets (user-defined digit sheets), password protection, split-screen display..
  • Durability: Explosion-proof glass, energy-saving mode, 2 standby Dalis..
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Roland Roland/TB – 03 Bass Line Base Line

  • Get the rave started. The Roland TB-03 Bass Line Synth brings back that unmistakable TB-303 sonic signature which defined the acid house movement of the late 1980s.
  • The compact TB-03 recreates the authentic TB-303 experience. There is the same user interface (although it's much simpler to program and construct patterns now), and you also get onboard effects like distortion and delays, as well as a four-digit LED screen for ease of use.
  • Battery or USB powered and featuring a mini-speaker and headphone jack, the TB-03 can be played anywhere.
  • Control vintage analogue gear with CV/Gate outputs or send control information via MIDI and USB.
  • Functions as a high-quality audio interface, providing a simple and reliable way of recording directly to your DAW application.Keep your favourite settings and sequencer patterns safe via the USB data backup function.
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Tactical Element Helmet Light Infrared Military Airborne Survival Light Outdoor Camping Flash and Magic Tape Support Fast Helmet Rescue Light

  • Safety - attachment provides emergency peel-away from helmet to reduce potential injury..
  • Operating Extremes - Powered by a standard lithium CR123A (3V disposable battery, battery does NOT included). photo cell for long life and extreme....
  • Status Confirmation - Positive visual and tactile confirmation of ON/OFF and operating status with no guesswork. Helps prevent inadvertent battery....
  • Simple Operation - Detented sliding switches are designed for operation by a gloved-hand, in the blind, with the helmet donned. Certain models provide....
  • Versatility&Visibility - Up to four user-defined operating functions ranging in visible colors and IR signals-either flashing or steady. Enhanced....
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