As per DIP package Intel 8257 DMA controller chip is a 40-pin programmable Integrated Circuit. The pin diagrams of physical and functional are indicated below. The DMA controller chip 8257 works in two modes namely slave mode and master mode. Likely the processor also works in two modes namely active ... Read More

In this program we will see how to find the smallest number from a block of bytes using 8085.Problem StatementWrite 8085 Assembly language program to find the smallest number from a block of bytes.DiscussionIn this program the data are stored at location 8001H onwards. The 8000H is containing the size ... Read More

In this program we will see how to convert binary numbers to its BCD equivalent.Problem StatementA binary number is store dat location 800H. Convert the number into its BCD equivalent and store it to the memory location 8050H.DiscussionHere we are taking a number from the memory, and initializing it as ... Read More

The processor, in active state writes to the Control register of 8257 to configure its working purpose. To find out the status of 8257, the processor reads status register of the processor. The control register is of length 8-bits which is only read by the processor but not read. It ... Read More

According to the microprocessor point of view, the 8253 is designed and has some specialty port chip I/O. We don't use it for interfering the I/O devices. For performing the application of time it is used. 8253 has the addressed A1 and A0 input pins.The counters have width of 16 bits. ... Read More

To extract year from date format, you can use in-built function YEAR() from MySQL. The query is as follows −mysql> SELECT YEAR(curdate()) as OnlyYearFromCurrentDate;The following is the output −+-------------------------+ | OnlyYearFromCurrentDate | +-------------------------+ | 2018 ... Read More

To create a table in MySQL that matches with another table, use CREATE TABLE command with LIKE operator. The syntax is as follows −create table yourNewTableName like yourOldTableName;The above syntax creates structure of the table.If you want all records then use INSERT INTO…...SELECT *FROM command. The syntax is as follows ... Read More

To calculate age in MySQL from Date of Birth, you can use the following syntax −SELECT YEAR(CURRENT_TIMESTAMP) - YEAR(yourColumnName) - (RIGHT(CURRENT_TIMESTAMP, 5) < RIGHT(yourColumnName, 5)) as anyVariableName from yourTableName;To understand the above concept, let us create a table. The following is the query to create a table.mysql> create table AgeCalculatesDemo ... Read More

To add more than 1 column with ALTER table command, you can use MODIFY column command. The syntax is as follows −alter table yourTableName modify column yourColumnName1 dataType, modify column yourColumnName2 dataType, . . . modify column yourColumnNameN dataTypeTo understand the above syntax, let us create a table. The following ... Read More

Processing symbol files is a message displayed on xcode when we create a project’s build. When this message appears, in background Xcode downloads files and symbol files for specific device and a specific processor on which build shall be installed.The symbol files contains debug symbols which are used to debug ... Read More