Relational Database Management System (RDBMS)Relational databases simplify the storage and retrieval of related information. For example, rather than storing the state a person lives in a relational database might store a number to a single list of all states. Significantly, this reduces overall storage needs and makes indexing and searching significantly easier and subsequently faster. Edgar Codd, working at … Continue reading "Relational Database Management System (RDBMS)"
Turing Complete Mechanical Computer (Z1, Z2, Z3, Z4)The Z-series computers are notable as the first recognized as the first “Turing complete” (modern) computer. The Nazis did not see the computer as strategically important and invested little in it. The company survived the war but there was little demand for their machines. They eventually sold the patents to the Americans. Zuse worked for … Continue reading "Turing Complete Mechanical Computer (Z1, Z2, Z3, Z4)"
Stock Ticker / Ticker TapeBoth the ticker and ticker tape lowered the cost of transmitting stock prices by eliminating the need for a person to translate them to and from Morse Code. Subsequently, this innovation served as a bridge from specialists required to send and receive telegraph messages to plain-text transmissions. Edward Calahan saw people rushing from the floor … Continue reading "Stock Ticker / Ticker Tape"
RocketsIn 1914, Goddard patented the first rocket and, in 1926, Goddard fired the first liquid-fueled rocket. Goddard predicted rockets would one day enable space flight, a prediction widely ridiculed as science fiction. Eventually, in 1929, Oberth fired his modern liquid-fueled rocket. Oberth eventually taught Wernher von Braun, who perfect modern rocketry. In time, both Oberth … Continue reading "Rockets"
Surgical AnesthesiaAnesthesia enables modern surgery, reducing pain and risk. Before anesthesia, patients were held down and surgeons would have to operate quickly. Amputations were common because surgeons did not have the time to do more complicated work before a patient went into shock from the pain. Ether is the first anesthesia. William Morton, a dentist, is … Continue reading "Surgical Anesthesia"
World Wide WebTim Berners-Lee worked at the European Organization for Nuclear Research (CERN). Background The internet was about 20 years old and connected many computers. However, once connected between computers, users searched for the material, an oftentimes odious task. Furthermore, many computers required logins. Think of the pre-web internet as a series of libraries without central directories. … Continue reading "World Wide Web"
Cable TelevisionCable television brings television channels to customers without antennas. Later versions bring more channels than analog antennas provided. Walson owned a small company, Service Electric, located in a mountainous region in Pennsylvania. Frustrated that buyers of his televisions could not receive a signal he climbed a mountain and installed an antenna at the top. Eventually, … Continue reading "Cable Television"
Roll Film & Roll Film CameraKodak’s original camera contained plates. Later versions contained one-hundred exposures; customers would take their pictures, mail in their camera, and the company mailed back developed pictures and a refilled camera. Roll film changed all that, vastly lowering the cost and complexity of photography and eventually enabling the creation of movie film. Ordinary people could purchase … Continue reading "Roll Film & Roll Film Camera"
Cathode-ray Tube (CRT)Cathode ray tubes are a vacuum tube with an electron gun at the back. The gun shoots electrons through the vacuum onto a screen which creates images. Thick screens that predate flat-screen televisions and computer monitors are cathode ray technology. Background German scientists Julius Plücker and Johan Hittorf discovered cathode-ray tubes. Hittorf noticed a negative … Continue reading "Cathode-ray Tube (CRT)"
Personal Digital Assistant (PDA)Personal Digital Assistants (PDAs) are handheld computers. They were supposed to be more convenient and simpler than carrying paper. Most significantly, and the reason they are a major invention, is their influence as a bridge to the smartphone. David Potter created the Psion Organizer in 1984 featuring 2K or RAM in a handheld (sort of … Continue reading "Personal Digital Assistant (PDA)"
Mobile PhoneMobile phones allow calls from anywhere that’s within range of a tower. They vastly increase productivity, convenience, lower the risk of a missed call, and they’re fun. Mobile phones work by beaming voice (and, later, data) to a tower, seamlessly switching from tower-to-tower as the person moves. Cooper Creates the Mobile Phone Battery-operated gadget maker … Continue reading "Mobile Phone"
Linotype MachineThe Linotype machine vastly reduced the cost and time needed to prepare printing plates, making newspapers and books faster and less expensive to print. Described as “the next Gutenberg,” Germany immigrant Ottmar Mergenthaler made typesetting vastly simpler. Whereas before his innovation typesetters would have to look for individual letters, arranging them together, his innovation did … Continue reading "Linotype Machine"
Random Access MemoryRandom Access Memory (RAM) is a type of fast memory. The Central Processing Unit (CPU), the brain of a computer, relies on RAM. RAM exists to this day. Every computer, including smartphones, contains RAM. The “random” in RAM refers to its ability to access memory anywhere, instantly, unlike a disk drive that must search for … Continue reading "Random Access Memory"
Washing MachineBefore washing machines, wealthier families hired maids or brought their laundry to cleaners. Most people did laundry by hand, a time-consuming process usually tasked to women. Washing machines dramatically lowered the cost of washing clothes while increasing cleanliness. A patent issued to Fisher on Aug. 9, 1910, for an electric washing machine. Many people claim … Continue reading "Washing Machine"
Circular Saw1813 Tabitha Babbit In 1777, Samuel Miller patented the first circular saw. However, the wind-powered saw did not have enough power to be of practical use. In 1813, Tabitha Babbit, a Shaker, invented the circular. Her insight was that sawing back and forth wasted half the motion of a saw. In response, she created a … Continue reading "Circular Saw"