Pengalamatan Memori | Materi Informatika SMP Kelas 8 | Bab 3 Sistem Komputer | Kumer | Fase D

Summary

This educational video covers memory addressing in computer systems, explaining the concepts of physical and logical addresses. It introduces hexadecimal numbering, its usage in simplifying binary values, and how to convert between binary, hexadecimal, and decimal systems. The video also demonstrates how to calculate physical memory addresses from segment and offset values using practical examples. Viewers are encouraged to practice through exercises from the textbook, enhancing their understanding of memory addressing and numeral system conversions in computer systems.

Takeaways

• 😀 Understanding memory addressing is crucial for working with computers, involving both physical and logical addressing.
• 😀 Physical addressing relates to the actual memory units, while logical addressing refers to addresses generated by the CPU.
• 😀 Hexadecimal (base 16) is a shorthand for binary in computing, using symbols 0-9 and A-F to represent values from 0 to 15.
• 😀 Hexadecimal values are commonly used in color coding and are more compact than binary or decimal representations.
• 😀 Hexadecimal numbers can be converted to decimal by multiplying each digit by its base value, depending on its position.
• 😀 To convert from hexadecimal to decimal, multiply the digit by the corresponding power of 16 and sum them.
• 😀 Binary-to-hexadecimal conversion can be simplified using BCD (Binary Coded Decimal), where binary groups are mapped to hexadecimal digits.
• 😀 Binary-to-hexadecimal conversion can also be done by directly converting each 4-bit binary group into its corresponding hexadecimal value.
• 😀 Memory addresses are divided into two parts: the segment and the offset, both contributing to the calculation of the physical address.
• 😀 To find the physical address, add the segment value to the offset value, keeping in mind the hexadecimal system's base 16 arithmetic.

Q & A

What is memory addressing in computer systems?

Memory addressing refers to the process of placing an address in memory space within a computer system. It enables the computer to access specific locations in memory to store or retrieve data.

What are the two types of memory addressing mentioned in the video?

The two types of memory addressing are physical addressing and logical addressing. Physical addressing refers to addresses visible as memory units, while logical addressing is generated by the CPU.

What is the significance of hexadecimal number systems in computer memory?

Hexadecimal systems are important because they provide a more concise representation of binary data. Computers primarily use binary, but hexadecimal is used for ease of reading and writing numbers, especially in applications like color codes.

How does hexadecimal differ from decimal and binary systems?

The hexadecimal system uses 16 symbols (0-9, A-F), whereas the decimal system uses 10 digits (0-9) and the binary system uses only 2 digits (0, 1). Hexadecimal is often used because it is shorter and more convenient compared to binary.

What is the method for converting a hexadecimal number to a decimal number?

To convert a hexadecimal number to decimal, each digit of the hexadecimal number is multiplied by 16 raised to the power of its position, starting from the rightmost digit (least significant digit).

How do you convert a decimal number to a hexadecimal number?

To convert a decimal number to hexadecimal, divide the number by 16 and record the remainder. Repeat the division until the quotient is 0, then write the remainders in reverse order.

What is the Binary-Coded Decimal (BCD) system and how is it used?

The BCD system groups binary digits into blocks of 4 bits to represent decimal numbers. This helps convert long binary numbers into a form that can be easily understood or used in other systems like hexadecimal.

What is the process for converting binary numbers to hexadecimal?

To convert binary numbers to hexadecimal, group the binary digits into groups of 4 starting from the right. Then, use a BCD table to convert each group to its hexadecimal equivalent.

How do you convert hexadecimal numbers to binary?

To convert hexadecimal to binary, replace each hexadecimal digit with its corresponding 4-bit binary representation, as shown in a predefined BCD table.

What is the difference between segment and offset in memory addressing?

In memory addressing, the segment refers to the part of the address that specifies the location of a memory block, while the offset indicates the position within that block.