IBM

90W Universal Laptop Charger UK Compatible with HP Lenovo Acer Asus Dell IBM Toshiba Samsung Sony Fujitsu Gateway Notebook Ultrabook Chromebook Power Supply Cord with 16 Tips

90W Universal Laptop Charger UK Compatible with HP Lenovo

90W Universal Laptop Charger UK Compatible with HP Lenovo Acer Asus Dell IBM Toshiba Samsung Sony Fujitsu Gateway Notebook Ultrabook Chromebook Power Supply Cord with 16 Tips Check Offer Price Wide input & output:Input:100-240V 50~60Hz worldwide.Output:15V 16V 19V 19.5V 20V,4.5A 90W,65W,45W.Not compatible with devices’ voltage higher than 90W Wide Compatibility:This universal adapter contains 16 optional tips,fit for most laptops,ultrabook,chromebook and so on.Including Dell HP Acer Asus Lenovo IBM Toshiba Samsung Sony Fujitsu Gateway,etc.(As long as the connector of your laptop belongs to one of these 16 tips,it will works.) Wide Compatibility: HP ENVY 17 15 TouchSmart Sleekbook M6 M7, Stream...

20 Rolls of Premium 80 x 80mm Thermal Paper Till Rolls

20 Rolls of Premium 80 x 80mm Thermal Paper Till Rolls

20 Rolls of Premium 80 x 80mm Thermal Paper Till Rolls, Receipt for EPOS POS, Cash Register, Credit Card Machine PDQ, for Epson Citizen Toshiba Star TSP Printer TH243 CBM232 CBM233 CBM253 Compatible with: Casio QT2000, Casio QT6000, Casio UP360, Casio VR-100, Sharp UP811, Tec TRST-53, Citizen IDP3535, Citizen CBM1000, Citizen CBM230, Citizen CBM231, Citizen CBM232, Citizen CBM233, Citizen CBM253, Citizen CT-S300, Citizen IDP310, Citizen IDP3210, Citizen IDP3221, Citizen IDP3310, FIDELITY CR2010T, FIDELITY CR2510T, FIDELITY CR715T, Geller BTP-R380, Geller R380, Ncr 7156, Ncr 7167, Ncr 7193, Ncr 7194, Samsung Giant 100D, Samsung SPS 530, Uniwell CBM 123, Uniwell CBM 233,...

Four Pines Publishing - Galton Board Desktop Probability Machine

Four Pines Publishing – Galton Board Desktop Probability

Four Pines Publishing – Galton Board Desktop Probability Machine The Galton Board is mathematics in motion and demonstrates centuries-old mathematical concepts in an innovative desktop device. It relates to the presentation of the binomial distribution by Sir Francis Galtons (1822-1911), which represents the normal distribution for a large number of balls. It also shows a superimposed Pascal Triangle (Blaise Pascal, 1623-1662), a triangle of numbers that follows the rule to add the two upper numbers to get the lower number. The number on each pin indicates the number of different paths that a ball can go through from the upper...