subject

Recently mobile phones have been used to pay for goods in stores and supermarkets. One methodof payment involves holding the phone close to a reader in the store. Discuss the advantages and disadvantages of this method of payment compared with other methods of credit/debit card transactions.

ansver
Answers: 1

Another question on Computers and Technology

question
Computers and Technology, 22.06.2019 11:40
Design a pos circuit that displays the letters a through j on a seven-segment indicator. the circuit has four inputs w, x, y, and z which represent the last 4 bits of the uppercase ascii code for the letter to be displayed. thus, if wxyz = 0001 then "a" will be displayed. (any answer with 22 or fewer gates and inverters, not counting any for the inputs, is acceptable)
Answers: 2
question
Computers and Technology, 22.06.2019 13:50
The instruction ishl (shift left integer) exists in jvm but not in ijvm. it uses the top two values on the stack, replacing the two with a single value, the result. the sec- ond-from-top word of the stack is the operand to be shifted. its content is shifted left by a value between 0 and 31, inclusive, depending on the value of the 5 least signifi- cant bits of the top word on the stack (the other 27 bits of the top word are ignored). zeros are shifted in from the right for as many bits as the shift count. the opcode for ishl is 120 (0x78).a. what is the arithmetic operation equivalent to shifting left with a count of 2? b. extend the microcode to include this instruction as a part of ijv.
Answers: 1
question
Computers and Technology, 24.06.2019 12:00
Match the function to its purpose. fast worth 50pts.
Answers: 1
question
Computers and Technology, 24.06.2019 15:00
Who introduced the concept of combining artificial and natural light in the studio
Answers: 1
You know the right answer?
Recently mobile phones have been used to pay for goods in stores and supermarkets. One methodof pay...
Questions
question
Mathematics, 08.05.2021 19:00
question
History, 08.05.2021 19:00
question
Mathematics, 08.05.2021 19:10
Questions on the website: 13722363