Languages-Assembly Language [3i Infotech Placement]: Sample Questions 27 - 29 of 51

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Question 27

Assembly Language

Describe in Detail


What are the different flags in ?


Zero flag

  • If result is O than flag is set otherwise it is reset i.e.. is O.

Carry flag

  • If an extra bit arises than it is set otherwise it is reset i.e.. is O

Sign flag

  • If D7 is 1 than it is set but if D7 is O than it is reset.

Parity flag

  • If number of 1՚s in the answer is even than it is set otherwise it is reset.

Auxilary carry flag

  • If a carry is generated in D3 & passed to D4 than AC flag is set otherwise it is reset i.e.. is O.
The Different Flags in 8085

Question 28

Assembly Language

Describe in Detail


₹ - C standard is used in ________.


Understanding of Pin Out of ₹ -232C
  • ₹ - C describes the physical interface for relatively low-speed serial data communication between computers and related devices.
  • It was defined by an industry trade group, the Electronic Industries Association originally for teletypewriter devices.
  • ₹ - C is used for exchanging data with modem and other serial devices.
  • Together with ₹ - C there is a complementary interface called the Data Communications Equipment interface.

Question 29

Assembly Language

Write in Short

Short Answer▾

Super Key is


  • A super key is a set or one of more columns to uniquely identify rows in a table.
  • Students are confused between super key and candidate key.
  • Candidate key is a column, or set of columns, that uniquely identify any database record without referring to any other data. A table may have one or more candidate keys, but one candidate key is unique- the primary key. .
  • Adding any other column or attribute added to a Primary Key makes it a super key.
  • Thus super key is primary key attribute.

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