10 most difficult computers riddles A list of ten (out of 37) computers related questions that are the most often answered incorrectly Computers quiz When was the first computer created and what was its name?In 1939 r - Atanasoff-Berry ABC. Atanasoff and Berry's computer work was not widely known until it was rediscovered in the 1960s, amidst conflicting claims about the first instance of an electronic computer. At that time ENIAC, that had been created by John Mauchly and J. Presper Eckert, was considered to be the first computer in the modern sense, but in 1973 a U.S. District Court invalidated the ENIAC patent and concluded that the ENIAC inventors had derived the subject matter of the electronic digital computer from Atanasoff very hard 24% in 1945 r - Eniacin 1945 r - Eniac32%in 1943 r - Colossus in 1943 r - Colossus 25%in 1939 r - Atanasoff-Berry ABCin 1939 r - Atanasoff-Berry ABC24%in 1941 - Zusego Z3 machinein 1941 - Zusego Z3 machine17%Created by: Tschuka. Statistics based on 240 answers in 2 languages »computer science riddles » Where does the symbol @ come from?From Latin. The sign comes from a Latin ligature replacing in the medieval and Renaissance commercial manuscripts the word "at" - and denoting the recipient of the parcel.He first appeared in 1448 in a document with a register of wheat deliveries from the Kingdom of Castile to the Kingdom of Aragón.very hard 25% from Arabicfrom Arabic15%from Greekfrom Greek15%from Latinfrom Latin25%this symbol was created for the needs of e-mailthis symbol was created for the needs of e-mail43%Created by: Tschuka. Statistics based on 331 answers in 3 languages »internet riddles » Who is credited as the first computer programmer?Ada Lovelace. She was an English mathematician and writer, chiefly known for her work on Charles Babbage's proposed mechanical general-purpose computer, the Analytical Engine. She was the first to recognise that the machine had applications beyond pure calculation, and published the first algorithm intended to be carried out by such a machine.very hard 26% Ada LovelaceAda Lovelace26%Charles BabbageCharles Babbage42%Herman HollerithHerman Hollerith18%Konrad Zuse Konrad Zuse 12%Created by: Tschuka. Statistics based on 219 answers in 3 languages »computer science riddles » Who perpetrated the "biggest military computer hack of all time" in 2002?Gary McKinnon . McKinnon was accused of hacking into 97 United States military and NASA computers. McKinnon states that he was merely looking for evidence of free energy suppression and a cover-up of UFO activity and other technologies potentially useful to the public. Web and print media across the UK ran a campaign to prevent Gary McKinnon's extradition to the U.S.very hard 26% Gary McKinnon Gary McKinnon 26%Steven Raymond Steven Raymond 17%Kevin PaulsenKevin Paulsen27%Chris ZboralskiChris Zboralski28%Created by: Tschuka. Statistics based on 296 answers in 3 languages »computer science riddles » What was the first computer virus in the DOS system?Brain virus. Brain is the industry standard name for a computer virus that was released in its first form in January 1986 and is considered to be the first computer virus for MS-DOS. It infects the boot sector of storage media formatted with the DOS File Allocation Table (FAT) file system. Brain was written by brothers, Basit Farooq Alvi and Amjad Farooq Alvi, from Lahore, Punjab, Pakistan.very hard 27% melissa virusmelissa virus8%Storm Worm virusStorm Worm virus21%I Love You virusI Love You virus42%Brain virusBrain virus27%Created by: Tschuka. Statistics based on 417 answers in 2 languages »computer science riddles » This is Atari Portfolio, the first PDA compatible with PCs from 1989. How long did it work on batteries?2 weeks. Powered by three AA fingers, this tiny computer could work up to 2 weeks. Built on the basis of the 80C88 processor with 4.91 MHz frequency, it had a text-based operating system compatible with DOS 2.0 and a set of built-in office applications.very hard 27% 20 minutes20 minutes34%2 hours2 hours24%20 hours20 hours13%2 weeks2 weeks27%Created by: Tschuka. Statistics based on 644 answers in 2 languages »technology riddles » the ancestor of the Internet was ...Arpanet. The ARPANET project led to the development of protocols for internetworking, by which multiple separate networks could be joined into a single network of networks. ARPANET development began with two network nodes which were interconnected between the Network Measurement Center at the University of California, Los Angeles in 1969very hard 30% AlohanetAlohanet11%ArpanetArpanet30%UsenetUsenet31%BitnetBitnet26%Created by: Tschuka. Statistics based on 404 answers in 3 languages »computer science riddles » The inventor of the computer mouse is ...Douglas Engelbart. The first computer mouse was conceived of in the early 1960’s by Douglas Engelbart , then a Director of Augmentation Research Center (ARC) at Stanford Research Institute (SRI), in Menlo Park, California. very hard 32% John KemenyJohn Kemeny17%Fernando CorbatóFernando Corbató18%Dennis RitchieDennis Ritchie31%Douglas EngelbartDouglas Engelbart32%Created by: Tschuka. Statistics based on 293 answers in 3 languages »computer science riddles » What is the largest company by market capitalization ? (as of March 31, 2017)Apple retains the pole position for the 6th year in a row. Apple’s market cap increased by 25% and the gap with second placed Alphabet (ex-Google) has more than doubled to $175bn.very hard 34% MicrosoftMicrosoft27%AppleApple34%GoogleGoogle31%AlphabetAlphabet7%Created by: Tschuka. Statistics based on 322 answers in 3 languages »records riddles » What type of printers are typically used in cash registers?Thermal printer. Registers typically use thermal printers to print receipts, although older dot matrix printers are still in use at some retailers. Thermo-sensitive coating used in thermal paper is sensitive to incidental heat, abrasion, friction (which can cause heat, thus darkening the paper), light (which can fade printed images), and water. very hard 37% Inkjet printerInkjet printer11%Thermal transfer printerThermal transfer printer23%Thermal printerThermal printer37%Laser printerLaser printer26%Created by: Tschuka. Statistics based on 330 answers in 3 languages »computer science riddles » Play computers quiz and see all the questions.