Defensive Designing

Programmers have to protect their program through defensive designing. Their code has to be well maintained Have to reduce number of bugs/errors Think of all possible ways the user could misuse their program Input Sanitisation is removing any unwanted characters before passing data through the program. Input Validation is checking that the data entered meets

Flash Storage

Types of flash storage: USB pen drives and memory cards(e.g. SD cards) are also flash-based, solid-state storage. They’re much slower than SSDs and have a much shorter read/write life. They’re used to expand the storage capacity for small devices like cameras, smartphones and tablets (which are way too small for SSDs and HDDs). Their capacity

Secondary Storage (HDD and SSD)

Secondary Storage: Primary storage: This type of memory is volatile. It refers to the memory areas that the CPU can access very quickly: like CPU registers, cache, ROM and RAM. It also has the fastest read and write speeds. Secondary storage: It is non-volatile memory. It stores data (operating systems, applications and user files) that

Ethical Reasons and Legalisation GCSE Computing OCR:

Computer Misuse Act 1990: Cannot gain unauthorised access on a private network on any user’s computer. Cannot gain unauthorised access on a network on any user’s computer to commit a crime. Cannot MAKE, OBTAIN or SUPPLY malware. Freedom Of Information’s Act 2000: This is where the public can request to view their personal data stored

Exothermic reactions in GCSE Chemistry

Hey guys, today I will be doing an overview for Exothermic reactions. An Exothermic reaction is when there is energy transferred to the surroundings. This can be shown by a increase in temperature on a thermometer. Bond Making = EXOTHERMIC This is important as when a product is formed there is going to be energy

RAM and Virtual Memory GCSE Computing

Ram is high speed, volatile memory: RAM (Radom Access Memory) is used as the main memory in a computer. It can be read or written to. RAM is volatile. Volatile memory is temporary memory. It requires power to retain its data. Non-volatile memory is permanent memory – It keeps its contents even when it has

Endothermic reactions in GCSE Chemistry

Hey guys, today I will be doing an overview for Endothermic reactions. An Endothermic reaction is when there is energy taken in from the surroundings. This can be shown by a decrease in temperature on a thermometer. Bond Breaking = ENDOTHERMIC This is important as when a product is formed there is going to be