/learn/s18/t15828 /learn/node/43289 In lesson one, we explain the difference between analogue and digital quantities, analogue and digital measuring instruments, and how analogue data can be digitised so that a computer can use the data. We start by using examples with which learners will be familiar. These examples include temperature, speed and time. /learn/node/43290 In this third lesson, conversions using the binary and decimal number systems are discussed. In particular, learners are asked to compare “27” as two ASCII characters with the binary representation of “27” as a number. /learn/node/43291 In this lesson we use a pattern of numbers to generate a formula for working out the number of combinations for n bits. We also demonstrate how to convert decimal numbers to binary and using division to convert from binary to decimal numbers. /learn/node/43292 The focus of this lesson is on conversions using binary and hexadecimal number systems. The hexadecimal number system is often called “shorthand” for binary numbers and is easier to work with and write down. The worksheet designed for this lesson provides learners with two ways to convert from hexadecimal to binary. Learners can make a choice as to which of the ways they prefer when converting from hexadecimal to binary. /learn/node/43293 Lesson 5 deals with floating point notation, overflow, underflow and rounding errors. In this lesson we look at the representation of real or floating point numbers in a computer. The worksheet should be used to enable learners to become competent in writing numbers in scientific notation. Once they have mastered this skill, the video can be used to explain the link between scientific notation and floating point notation. In addition, we discuss why some calculation errors result in certain computer calculations. It is for this reason that choosing the type of data is important. /learn/node/48130 In this lesson we explain common terms associated with databases, including fields and records. We also investigate a range of database application areas in the real world. This lesson is aligned with NCS for grade 10. /learn/node/48130 In this lesson we explain common terms associated with databases, including fields and records. We also investigate a range of database application areas in the real world. This lesson is aligned with NCS for grade 10. /learn/node/48130 In this lesson we explain common terms associated with databases, including fields and records. We also investigate a range of database application areas in the real world. This lesson is aligned with NCS for grade 10. /learn/node/48131 This lesson is focused on a database application package and explains the purposes of its different components or objects namely tables, queries, forms and reports. This lesson is aligned with NCS for grade 10. /learn/node/48131 This lesson is focused on a database application package and explains the purposes of its different components or objects namely tables, queries, forms and reports. This lesson is aligned with NCS for grade 10. /learn/node/48131 This lesson is focused on a database application package and explains the purposes of its different components or objects namely tables, queries, forms and reports. This lesson is aligned with NCS for grade 10. /learn/node/48132 This lesson focuses on how to create a table. In addition we also work through editing functions that can be used in database applications. This lesson is aligned with NCS for grade 10. /learn/node/48132 This lesson focuses on how to create a table. In addition we also work through editing functions that can be used in database applications. This lesson is aligned with NCS for grade 10. /learn/node/48132 This lesson focuses on how to create a table. In addition we also work through editing functions that can be used in database applications. This lesson is aligned with NCS for grade 10. /learn/node/48133 The focus of this lesson is on database skills that include entering data into a table, editing the information, navigating around the table and then printing the data This lesson is aligned with NCS for grade 10. /learn/node/48133 The focus of this lesson is on database skills that include entering data into a table, editing the information, navigating around the table and then printing the data This lesson is aligned with NCS for grade 10. /learn/node/48133 The focus of this lesson is on database skills that include entering data into a table, editing the information, navigating around the table and then printing the data This lesson is aligned with NCS for grade 10. /learn/node/48134 This lesson deals with creating and editing forms. We also investigate some skills that will help learners distinguish between good and bad user interface design from a visual perspective. This lesson is aligned with NCS for grade 10. /learn/node/48134 This lesson deals with creating and editing forms. We also investigate some skills that will help learners distinguish between good and bad user interface design from a visual perspective. This lesson is aligned with NCS for grade 10. /learn/node/48134 This lesson deals with creating and editing forms. We also investigate some skills that will help learners distinguish between good and bad user interface design from a visual perspective. This lesson is aligned with NCS for grade 10. /learn/node/48135 In this lesson we use the analogy of water being filtered to applying a filter to a record. Learners are exposed to Boolean conditions such as the AND, OR and NOT. This lesson is aligned with NCS for grade 10. /learn/node/48135 In this lesson we use the analogy of water being filtered to applying a filter to a record. Learners are exposed to Boolean conditions such as the AND, OR and NOT. This lesson is aligned with NCS for grade 10. /learn/node/48135 In this lesson we use the analogy of water being filtered to applying a filter to a record. Learners are exposed to Boolean conditions such as the AND, OR and NOT. This lesson is aligned with NCS for grade 10. /learn/node/48136 In this lesson we explain how reports are set up based on tables or queries. Learners will investigate different design techniques and design the interface for a form. This lesson is aligned with NCS for grade 10 /learn/node/48136 In this lesson we explain how reports are set up based on tables or queries. Learners will investigate different design techniques and design the interface for a form. This lesson is aligned with NCS for grade 10 /learn/node/48136 In this lesson we explain how reports are set up based on tables or queries. Learners will investigate different design techniques and design the interface for a form. This lesson is aligned with NCS for grade 10 /learn/node/48137 This last lesson wraps up this series and shows how a database and other application software such as word processors and spreadsheets work together. This lesson is aligned with NCS for grade 10. /learn/node/48137 This last lesson wraps up this series and shows how a database and other application software such as word processors and spreadsheets work together. This lesson is aligned with NCS for grade 10. /learn/node/48137 This last lesson wraps up this series and shows how a database and other application software such as word processors and spreadsheets work together. This lesson is aligned with NCS for grade 10.